My primary pursuits are mountaineering (hiking with the goal of a summit) but I am beginning to re-kindle my love of Backpacking. In particular I have become a big fan of the Ultralight approach and love this website. I seem to be in a perpetual state of shelter/sleep system evaluation. My current setup for shelter is a GG SpinnTwinn with YMG Bug Bivy 1.0 (summer) or Katabatic Bristlecone Bivy(colder). Sleep system is Katabatic Chisos 40 degree quilt with Neoair short.