In reply to TheDrunkenBakers:
> Holy sh8t. No kidding. I dont want cheap but that's going to set me back £600
The Exped basecamp range might be worth a look. They're not cheap either, but I think the synthetic ones are less than Thermarests, and bigger in most dimensions. They're a bit of a faff to inflate, but it's not too much hassle if you're not moving on every day, and they seem very comfy and pretty sturdy - I've got one I use for 'posh' camping, pyjama parties etc.