Hi there I'm looking for advice on a sleeping mat . I have £30 to £40 pound to spend on one . I'm after something self inflating in green drown grey or black ..no bright colours lol..I've been looking at the army one on eBay they seem to fetch 35 pound wich think is good price for them but I've seen people say they had problems with them getting big bubbles in them.is this a certain type or are all the army ones prone to this . I have seen acouple of self inflating from the 3/4 British one the NATO French approved one the highlander one there's quiet acouple but I'm not sure wich one is the one with the bubble problem...I'm not in no rush for one as it won't be for acouple of weeks as I have other stuff needing first...