Alps gear is a pretty good value.

Big Agnes makes some extremely light tents. I've been using a Big Agnes Emerald Mountain tent for 10 years now. It has a couple holes in the screen and some zipper rash, but it's light and still keeps me dry.
They have excellent customer service, too. I wrote them about ordering some replacement aluminum pole sections; a couple of mine got bent after a fool fell on my tent. Big Agnes sent me three pole sections for free!

I search the internet vendors (like Campmor, Sierra Trading Post, etc) for closeout deals.