In reply to Brendan H:
Budget is everything - how much have you got to spend?
Unless you're minted and/or a deluded follower of fashion, I wouldn't touch a V Dub with a bargepole: expensive, cramped, uncomfortable to live in and expensive. And not cheap.
Coachbuilt is better if you're looking at starting a family - we had a great time as a young couple in an old Astra van, but roughing it with babies is a lot less romantic. Doing your own conversion isn't that hard, but can be a headache for signing off and insurance. An early-2000s 2-4 berth basic model, on something like a Ducato base, is relatively cheap, easy to insure and comfortable. Bog, shower, kitchen, head room, drives like a car.
But then, I'm too old for roughing it now. We're between vans and I have a very specific idea about layout for the next one, so am taking my time. That last bit is probably the best advice - very cheap vans aren't actually cheap in the end, so don't be afraid to pass them by if they're not exactly what you want.