Common sense dictates that you buy a new mattress when you buy a used rig. I'm not sure what the skeeve factor is on the dinette cushions, but recovering the cushion pales in price when compared to the first year depreciation on a new coach.
I don't think anyone replying is against buying new. IMHO, it just makes more sense for a newbie. I would qualify that by saying that if you're not a tinkerer or not mechanically inclined at all, then having something with a warranty and a good relationship with a dealer nearby is for you.
