I have two older Moss tents, one a 3 person Deltoid, the other a 2 person Starlet GT. Great tents. Moss doesn't make tents anymore, though. (MSR tents are their current incarnation, but I don't know if they're as bombproof.) The Deltoid is bit heavy for easy backpacking, but is great if you're out in the elements. It's not what I'd really really recommend for car-camping, either, overkill for mild weather stuff.... but, it's what I use, since its what I have. The smaller one if the one I backpack with. When the family decides to go somewhere and camp, I'll put the kids in the smaller and the wife and I in the larger.
If I was getting one for vehicle use (not backpacking), more family oriented (larger), I'd look at some of the less-expensive boxier tents, something you don't freak out about the kids being a bit rough in....
-L