i would not go with Cascade Windows or Jeldwen Windows. There is no labor warranty at all on Cascade and Jeldwen Windows only has a two year warranty on labor. All 3 don't have glass breakage. What line of Ply Gem Windows - premium and pro 100 are the ones I recommend. Take a look at Milgard Tuscany and Simonton Impressions series.

Stay away from the jeld wen windows. I have replaced every single one in my 11 year old home, due to seal failure. Every single one ( about 60 pairs!!).

Thanks for responding rivers7 and rowan 1963. It has been quite a while since I first posted that. A lot has happened. The only manufacturer locally that will make a 3x5 bow window is Cascade. Even then the quotes I got were from $1681 to $2255, depending on the line. At those prices I can't really afford a bow window and I am going to start over with just a new picture or slider window. If you were going to get one of those would you still recommend the Ply Gem Premium or pro 100 and the Milgard Tuscany? I think I can get a local contractor to bid those. One other line that a local contractor was recommending was Empire Pacific. Have you heard of that?
Thanks again