I'm looking for anyone else that has experienced these windows. We had 3 put in 5 years ago. Not a single problem, and they look and work like they did when first installed. If I recall correctly, they're built by winchester. I recently put a 300 watt halogen work lamp outside the window to see if any heat could be felt from it on the inside after 5 years. Not a bit. They're great windows, but pricey. I'm curious to find out from some of the northern climate folks out there if the premium price is worth it. We reside outside Buffalo, yes lots of snow at times. I've been reading alot on this sight about Pella nightmares. Like anything, having them installed correctly is the key. Do you get what you pay for with windows, or can you save a few hundred bucks in trying economic times and still get close to the quality of waht you're used to. I can save almost a grand, is it worth it?