ellenbehr wrote:
remember that you'll want to balance comfort (family of 7 is a lot of people in an RV, but it's been done) with mobility -- the larger the rig, the fewer places you can get into. State parks and many federal lands have smaller, tighter spots you'll have to bypass in a bigger rig. Look harder at HOW the RV is made than what the amenities are -- you want something that will hold up MORE than you want some cute cupboards, for example :)
This is where we're banging our head against the wall right now: New Gas Class A or used diesel? New gas will have a warranty and lots of amenities. Used Diesel will have more tow power (we're towing a 4k lbs minivan) but it's older so who knows what could go wrong.
btw, the site you recommended is awesome!