I am thinking of replacing 7 windows and 4 sliding doors in my house. I live in southern california. I got a quote from an installer for the simonton impressions 7500 line. The windows are all of "average" size, however my sliding doors are (2) 8-footers and (2) 10-footers. The quote I got was for $9500, does this sound like a good deal? Some other quotes that I have gotten for Milgard Tuscany line was in excess of 13k. Any opinions are greatly appreciated, as I am new to doing research on this topic. Is simonton comparable to milgard?