I would look at outwell, i am just about to buy the vermont lp, pricy but we have always used outwell tents, our present one the sunvalley 6 has been fantastic, we are changing it for one with metal poles and a larger porch area. they are 799 new for 2012 model, you may find the vermont l, 2011 for 599. I always think, buy cheap buy twice. If you don’t like it they sell very well on ebay.
Take a look at the official videos on youtube from outwell. for the vermont LP.
We also have a hi gear gobi 4 tent for when i go just with my son. Really can’t compare the quality with outwell.