We go through these things like water, for some reason!
Thought we'd found the perfect one, two singles zipping together, so reducing the annoying wobble from the other person, but still keeping the ability to use a double bag. Got a puncture in one, which the patch won't cure, and the other keeps deflating just enough to be uncomfortable but not so much as to suggest another puncture.
Help! What do you use and how many nights can you manage on it?