in my opinion, the Gorell is a better product than simonton 5500, also nicer looking and more energy efficient. its a no brainer in my view.
+1 . I'd have to agree with that. The Simonton 5500 is probably in the same class and is not a bad product, but I'd choose the Gorell even if the prices were switched around.
You might also check out HiMark/Okna, Softlite, and Sunrise lines as top tier choices (a notch above those two IMO.)