The amenities are are a level below Dalton's (still very nice), and roughly comparable units are less costly (at least, the ones I considered). Ultimately, I wasn't won over by Dalton because of 1) lower value (for me) and 2) location: I have no connexion to its area.
Winthrop's units are quite nice and offer an excellent space/amenity package advantage over the Sudbury. (I preferred the views from one of the Sudbury units, however.) And their trims, and installed kit, far exceeds what the Sudbury offers (astonishing, considering that comparable units are offered at less than a Sudbury unit I shortlisted due to the market downturn). Millennium Tower's strengths are in its amenities, in my opinion. Honestly, a lot of the non regal units could be anywhere (and, indeed, a few floor plans are painfully similar to nearby Avalon buildings ). Some of the finishes are subpar for the price point and I didn't deem the units I considered worthy of the upgrades when new offerings were available in high rise (Winthrop) or low rise in the area. Plus, the prices remain overinflated, perhaps an effect of remote (absent) owners demanding their local agents defy local market pressure to drop listing prices.
Back on point: I prefer not to have a balcony, so Winthrop's lack of their view impairment is a boon to me. What I do like - truly floor to ceiling windows - are only offered on certain floors of these buildings (generally, although not always, among the top floors).
In any case, Winthrop is a handsome addition to the city.