Thanks again to all who replied to my "need resto recs!" post. We enjoyed many of the recommends and had some surprises of our own...here's a quick review:
Acqua - inventive menu, mix of spices interesting, sometimes overdone in case of a tuna tartare entrée, but I enjoyed the main of sturgeon with a mashed chickpea 'side'. Dessert was a plain soufflé, nice but not memorable. Great service and wine pairings were decent. The room is typical for a financial district - large w/out much ambience :-)
Butterfly - interesting combinations (strawberries and lightly smoked salmon rolls) good, no surprises, nice location on the water. Table tried swordfish, filet mignon all was well prepared and presented. Only disappointment was fried (yick) calamari...what a waste - grill or steam people!
Pesce - Smaller resto serving Italian small plates (ah, old school!) with cheeky takes on "fish and chips" and salads (barley and crab)...All good and great place to try and share multiple things. Warm service...
Zazil - this was a nice surprise - we didn't know what to expect of "coastal mexican" and it was great. This is the 'sister' resto of Colibri which someone had recommended, but by chance we found this one. Location in a mall is a bit off-putting, but once inside, you forget about it. Inventive selection and presentation including octopus carpaccio, hibiscus flower enchiladas in a cream sauce, long range of tequilas...it was very good.
Sushi Groove - good, fresh menu daily
We also had lunch at Mocca (maiden street) and Fox's Grill (?) a dinner with upscale menu around the embarcadero area..
I'm still full! Anytime you're visiting Montreal, I'd love to return the favour. Thanks for the great ideas.