Based on what I've seen...Sunrise.
I don't like the Mercedes against Chevy comparison, but I understand where they are coming from. Ie going to Sunrise you get a higher quality product without the price (per say).
My intention with that metaphor was that Alside is very much a large, mass produced window made to more "average" standards. Sunrise is more of a "custom" built window built to very high tolerances. One of my favorite things to do is to take two samples side by side with the Sunrise being one of them - and have them with their sashes locked. Then grab the sashes and try to move them. Invariably the Sunrise will move very little - if at all. The other window will always have much more play in it.
Hope that clarifies my post a bit.