I havent dealt with them, but on Monday night this week I had Evans Glass come over and provide a quote for replacement in my upstairs and a spearate quote for the whole house. They make an excellent window but are priced way to high. They started at 38k, then went to 23k, now they want to go lower. YIKES!

Do some research on what they reenforce the header with ( should be steel or titanium) and make sure they use that anti-bacterial/microbal blocker in the plastic.

My Father in law just had 11 windows replaced last week with Penguin glass (in Tacoma), they have a great triple pane that's comparable to Evans glass. They look killer and are very well made.
They Use Krypton/Argon gas mix like Evans does as well. I'm going to be in touch with them next as I feel like Evans is trying to stick it to me. Hopefully none of you who read here work at Evans

Whatever you do don't go with cheap vinyl's. The installer I spoke with said alot of thier jobs right now are vinyl replacement from within the last 5-7 years where people went with a checp product ( discount, home depot windows, etc) and they already need to be replaced due to sagging and mold.