We are enclosing a patio area to make a four season room. Our architect recommended we look at Bonneville windows (Canadian company). He says they are comparable in quality and price to Anderson but likes the muntin styles better. We are adding on to a vintage (1740) home so muntins are a factor to consider. We had almost decided to go with Anderson because of their reputation for after-sale service. Has anyone had any experience with Bonneville - particularly replacement and warranty experience? Thanks for your help.