I had all the windows changed in my house with First Choice after they changed all the windows in my uncles house.
The windows look really nice and were installed well (No leaks, gaps) in my place, however a few of the windows in my uncles place did leak as they were not caulked on the outside.
I found the salesman who came to my place quite pushy but decided to go with them cuz they were resonably priced had worked on my uncles place (this was before the leak)
Combining the pushyness from my experience and the leaky windows from my uncles place, i dont think i'd use them again.