I have no problems with Simonton windows.
All of the Sales reps said if you purchase major brand windows and have problems such as drafty, it's not because of the windows but because of the poor installation.
My dealer handle Anlin, Milgard, Superior, Simonton and Certainteed. This company is complaints free for 7 years at BBB and 25% of their customers installed Simonton windows.
I will e-mail you the names of the installer with good reference.