Hi, we have a 6x15 Livin Lite VRV. This is our 3rd year with it. We're too far away for you to come see ours, but still thought I'd weigh in.
We do not haul a motorcycle or ATV. We just like the versatility of it. We have 4 kids, and we added a folding bunk bed inside. We also use a cot on the floor sometimes. But some of our kids prefer to sleep in their own tent (we were tent camper before this). I wish we had more storage space (cabinets, etc) in it - so I wish we had the next size up but my husband wouldn't do it! But food & clothes for 6 people takes up a lot of room. But my husband won't buy a truck, so we tow w/ an SUV and we're maxing out even w/ all-aluminum.
We do have a bathroom in ours. No refrigerator or A/C. We have found the VRV to be cooler than a tent. We live in the midwest and I've never wished we had a/c (again, it's cooler than what we've been doing for years).
One thing nice about 6x15, is you can get into about any camping spot. So when you call for reservations, and you can fit into any size site, you're more likely to be able to get a reservation.