>>1154818>vanCheap. Small. Conversion vans can be REALLY nice and well insulated. Work vans big and empty, ready for DIY shit without you having to do much prep. Easiest to work on/get worked on. Best availability of parts, especially for older models. Great for one or two close people. Can park it on the street. General public will think you live in a van by the river and leave you alone.
>busBiggest, even a short bus like mine has much more room than the biggest van. Being able to stand up in it is great. 4 window short bus can fit into parking stalls but no bus can be parked on the street. Small gas engine bus will be easy to find parts for, not so easy to find a shop that can work on it. Bigger diesel buses are a pain in the ass to get fixed, if you're taking one to a shop you can guarantee they will try and rape you. Bus also very very easy to do DIY interior stuff. Anchor points everywhere, thing is rated to be able to roll and not collapse. Safest option. Driving something that big can be a bitch if you're not very experienced. Easiest to get titled and insured as a motor home, saving you $$$. General public will come and talk to you about your bus, people love it. Sky is the limit with a bus, you can even add a second story. Highest quality of life in a non RV for the best price.
>DIY trailerI'm not gonna touch on fifth wheels or fancy trailers. Everyone knows they're nice.
Trailer can be as small or as big as you want. You have to register it. Possible to fit whatever you want into it, make it as nice or as barebones as you want. Keep passengers out of your living space. Can't park anywhere, can leave the trailer places. I've seen people go hunting/exploring from walmarts and just leave the trailer at the store, come back to it at night. General public just ignores trailers as far as I can tell so as far as public acceptance goes trailers win. Having a truck to pull it with gives you the most options of the three. It's also the most expensive option.