In reply to CharlieMack:
I think it really depends how often and for how long you intend to sleep in it.
Medium vans- had one before I started climbing, but used to sleep in it occasionally. Pros- as comfortable as you want to make it, you can properly admin yourself in the back (dry kit, wash yourself, cook, chill out and watch dvd's if it's raining etc etc- do not underestimate the value of this stuff!), and I have used and would use one again in winter. Cons- Mpg wasn't amazing, harder to park (think about some of the places you end up parking when you go climbing), generally slower on motorways, you constantly wonder why you didn't just buy an small van/estate and suffer a bit!
Small vans- never had one, my reasoning being that it's a bit of a compromise between a van and a car. I've had a few estates and used to go climbing and sleep in them for up to a week about twice a month. Pros- better mpg, when not using as a camper it's just a regular car, get more for your money (builders will keep old vans going until they're knackers), easier to park, not bad comfort if you get one where the seats told flat and out a mattress in the back. Cons- much less room, any more than a week and frankly things are getting unhygienic in there, can't really dry kit or do personal admin, cooking is a scary affair, less privacy (I made an all-round curtain, but still), forget about winter- everything ends up soaked it's a nightmare, you constantly wonder why you didn't just buy a decent sized van!
To summarise; whatever you buy, you'll spend your whole time wishing you'd chosen the other option. Then when you finally make the switch, you'll be wishing you never had. Grass is always greener mate!
Post edited at 08:41