had Brian and Dave Anderson replace all the windows (casements on the main floor and sliders in the basement) in my house over the last 3 years including 2 screen doors and a patio door
http://www.torontowindowsanddoors.ca/
they install North Star products
http://www.northstarwindows.com/
couldn't be more happy with the quality, operation, ease-of-cleaning etc. of the windows versus the house's 1957 originals...and it was way less $$$ than I had anticipated so kinda kicking myself that I didn't do it many years ago
Brian and Dave are a real good-natured sort....easy going, zero pressure......and they arrive 10 minutes earlier than they say they will on the exact day you schedule....work very clean....when they were done you wouldn't even know they were there.....they replaced my bathroom window so cleanly I didn't even need interior paint
got their reco from the company who did my kitchen reno.....decided we should replace the kitchen and front hall windows during the reno....so they had to work within an exact schedule to avoid other contractors....and they delivered as promised
same deal with my basement windows....had them scheduled for an exact day and time to avoid other contractors because two of the windows are under my deck (old deck was removed, then had the foundation dug up and waterproofed, then they installed the basement windows just before the new deck build started)....and again they delivered as promised
I've had tons of reno work done on my house over the last 3 years involving countless trades and these guys were by far the most reliable