Largest, Cheapest Class A or Travel Trailer?

I think the OP was asking motorized or trailer. For my 40 outings per year "plug and play" is best so the motorhome is my choice. Jump in and go, plug it in, you're done. Towable has it's advantages if you are sightseeing away from a base camp and need a more maneuverable vehicle. Also if stays parked for log periods. Towables are cheaper if you already have the tow vehicle. If you don't have a good tow vehicle then motorized can actually be cheaper overall in your price range. Don't rule out Class C's which are frequently a bargain. They often have really low miles because they are "starter" units for young families who have less vacation time. But you want slide outs in anything or it will get real crowded really fast.