Tom you mentioned you were somewhat clautrophobic in a bag? I am too. I have had a Puma on and found it very good - roomy enough but not too restrictive. Were I to buy a single dedicated bag It would definately be the Puma. I do like it.

As it is however, I do very well in my one to two deep winter trips a year in my versalite, inside a cheap synthetic barrel bag. I still want that Puma, but haven't been able to justify the bucks for it. yet.