An ultra cheap one from Decathlon, about £10/12? Really comfy, even for my weight, back and tossing and turning habits, they are full single bed size, so a biggish tent is needed. Also have a double, for the two of us, is as good or better than many French hotel beds.
Current one has lasted for quite a few years now. Only had one that went down, which got replaced next day (all transactions in France).
They have an inflation valve, so at a push you could do it by mouth over time, but I have an electric pump. The whole valve unscrews, so deflating is very rapid.
Cheap enough to just dump to save carting it back from the sunny south instead of wine.
I had a thermarest but found the noise far too loud when I squirmed - maybe the fabric is different now.
If I was much younger I would have a closer look at one of the exped ones.