I've worked as a realtor before and have been getting back into the market for myself lately. If you are buying, here are my battle scars (since you mentioned ICE). Sorry for the post length, I have a lot of opinions!
ICE is actually laughably bad. A few weeks ago there were wine bottles being thrown off balconies onto the street below from the 40th floor. If you visit, you will see remnants still on the surrounding sidewalks. I had a showing there and we waited for the elevator for about 30 minutes at one point... this was for low-rise. Kitchens are tiny... the fridges are literally like mini fridges. As someone else in this thread mentioned, the layouts look like the architects (or builders) were drunk when designing them... just weirdly angled walls and unusable spaces all around. Terrible finishes relative to Harbour Residences as well (see below). It is hard to see when you are not in the industry what qualifies for "terrible finishes" but both buildings are similarly aged and situated and yet most units in ICE are falling apart at the seams and look terrible on the inside.
Harbour Residences. Terrible management (Menkes has off-loaded it onto some other corp). Elevators never work. 90% of east-facing views are going to be obstructed by the CIBC buildings (phase 2 starting soon) and 90% of west-facing views are currently obstructed by the west tower or ICE. Public amenities are always a dump and the gym is contracted out (a running theme in this building) to PURE Fitness which is both inconvenient and costly if you live with one other person. Price per sqft is also insane relative to ICE because although they are still covertly an "Airbnb" building, they have managed to escape ICE's reputation. For god knows what reason.
Living by the waterfront you will have bug problems, even in the newer and "nicer" buildings. From what I understand exterminations don't really do anything. This applies even if you don't have a south-facing unit. It has to do with the humidity and the lake.
Another set of buildings I hate are the cluster of buildings in Fort York. I don't even know what they're all called because they blur into one after a while. The area is so out-of-the-way in my opinion, and aging very poorly. The area is poorly planned and transit sounds like a nightmare. Not all of the buildings are bad though. I think the ones I have a specific problem with are Spectra.
33 Harbour Square do not have balconies and will charge you maintenance fees out the *** because they are ancient.
Water Club has very awkward floor plans. Long, never ending hallways and rounded living rooms. Nice building amenities and staff though.
Monde Condos towards the east side of the waterfront are fairly nice. Nice, straight layouts that just make sense. Nice, high-quality finishes. Well situated (your views will likely not be immediately obstructed). In these newer buildings, it is very hard to find floor plans that just make sense and views that are unobstructed. The builders were not drunk when making these! From a building architectural pov, the tower is beautiful and one of the most interesting in the area. Highly recommend this one as far as the waterfront goes, it's a gem.
Residences of the World Trade Center -- older but well maintained. Not bad.
Moving away from the Waterfront
Massey Tower is one of my least favourites. As well as Aura and 10 York. All fall into the same set of crap. This isn't just an issue of "over priced" -- the finishes are cheap, the layouts are awkward, the ceilings are low outside of "principal areas" (in 2021 at a luxury building priced at $1500/sqft there is no excuse for this subpar crap). 10 York is also next to the ICE buildings which largely cheapens the experience. This basket of buildings just has an insane PR machine and a lot of hype built around them, but I would save your money. I don't mind One Bloor or 488 University because even though they are expensive, they are at the very least decently built, well-designed and well-planned.
In King West... many complain about the quality of the build at King Blue - lots of unfinished features and generally not the most reputable builder. Also, King Blue units are in a bit of predicament because while they are currently priced to account for a nice, unobstructed view on the south-side... this view will be ENTIRELY obstructed by 2023 due to the Nobu towers and 55 Mercer. Buyer beware!
Bisha Hotel... some people like these units, in my opinion the bedrooms are ridiculously small, not even sure how you would put a bed in them. Also the "residences" (non-hotel) have a back alley entrance, not directly entered through the hotel, it feels very odd for the price per sqft being charged in this building. I would not even visit this one again.
Pre-construction, I'd like to say that it is too early to tell for Nobu but 55 Mercer just sucks. 55 Mercer is situated to be largely obstructed in views, the floor plans make no sense, and the developer is notorious for its cheap finishes and poor planning. Check out INDX (same developer) where there is a recurring problem with sinks backing up and flooding the units, a design flaw according to the plumbers. Kitchens are also not designed for cooking. Just a bad place to live all around. I feel bad for anyone who signed up for this atrocity. At the beginning of the pandemic when there was panic in the air, I noticed some people sold these on assignment for a loss, something I haven't seen at any other point.
In King West, I don't mind the Pinnacle (295 not 290). Decent building, really well proportioned units and price per sqft isn't bad.
On a more positive note: I have a real soft spot for the buildings are Chaz/Casa (and X2). Floor plans are beautiful and just make sense, building amenities are beautiful and well kept. I believe Chaz/Casa are almost 10 years old and yet have aged much better than most of the buildings I've described above. The finishes are just beautiful, with flat ceilings (sometimes concrete!) and large, quality windows. Beautiful facilities, really well managed, maintenance fees are relatively low. They really don't build them like this anymore, sadly.