In reply to colina:
I got a sea to summit SP1 in long recently, and its great, packs down really small (I use it for bikepacking in a saddlebag) and is warm for the weight, although in winter you'll want a liner and/or your jacket on in it. Not cheap but really good
Oh, and I'm 6'3 and theres plenty of extra legroom in the long version
Post edited at 12:38