Im sure this has been talked to death but i haven't managed to find a thread. Are these things as good as they claim?I don't want the sleeping bags as i normally wind up ripping them so just thinking of the roll out/ roll up portable topper at 77cm wide (x2). At least this way WHEN i decide i don't want to share a bed with the wife i can make up 2 singles ( great thinking eh?).Anyhow are they any good please to those who have used them?