1st timer, please help! Best RVs 34-40' under $350k ??

Best RV is one that has a good resale value when you're done with it, especially if you're laundering money. :B :B :B

For that knowledge all you need is a blue book. Figure out how long you'll keep it then look at all the big brands, their original price, then there trade in value. That should give you a good idea of quality.