I'm looking at the Vango Adventure SIMs and trying to decide between the 5cm or 7.5cm versions. Does the extra 2.5cm make a lot of difference or will I be perfectly comfy on the thinner one? My main concern from looking at various reviews is how big the thicker one might be when deflated.
There are also lots of comments about them being difficult to deflate. Is it easier to have two singles instead of a double?