We own a 28' tag-along that we've used for about 5 years for recreational purposes -- trips of anywhere from 3 days to about 3 weeks. We tow it with a Tundra.
If you want a 5th wheel (I've looked into buying one), you'll need something bigger than a half-ton truck. Half-ton trucks are about a dime a dozen -- Ford, Chevy, Ram, Toyota, Nissan all have models -- and are readily available lightly used in good condition. Bigger than that (3/4 ton and up) are much less common and harder to find used. Worth noting...
We find it very (very) nice to be able to unhitch the trailer from the truck at the campground, leave it parked (and hooked up to water, electric, and sewer if that's provided) and use the truck to drive to -- wherever we want to go -- grocery store, trailhead.
We prefer campsites with at least water + electric hookups -- we don't boondock. Some state parks and many national parks don't offer this option (full hookups). The further north you go, unsurprisingly, the harder it is to find campsites that offer water -- harder to install and less useful in a shorter "warm" season climate. We live in the US S.E., so this hasn't been a problem locally but has been something I've noticed when scouting out routes and sites for longer trips.
Before we bought, a salesman at an RV place told me our first camper should be something used. He said there were things we'd think we wanted (or didn't) that we'd hate (or wish we hadn't gotten), and no sense buying new to figure that out. Very sound advice, in our case. We bought our camper used and have enjoyed it for 3 years but will look for a few (not many) different features when we replace it.
Sound of rain hasn't been a problem. The bathroom is small. I prefer to use the bathouses in campgrounds, my hubby prefers the small camper bathroom. Everyone's different.