I have a 25 year old rather large house (over 30 windows) with original (I think Marvin) wood windows that are drafty, some with rotten sills, etc. You get the picture.

I plan on living in the house for another 5 - 7 years, not much longer.

I received four bids and am a bit overwhelmed since each claim their window is the best, most efficient, have their own installation people, etc., etc.

Anderson Renewal $1,120 per window installed

Marvin Integrity Wood-Ultrex $908 "

Okna 400 - $725 "

Window Nation - $512 "

I would appreciate your opinions. Price is of course important, but not the most critical.

Thanks in advance.