I also use a lot of different systems, but in the summer my go to system is my BD Betalight(18 oz) and a homemade bug bivy. Torsolite pad and Arc ghost quilt. Winter time is the same Betalight, but change to an Arc expedition quilt and an old thermarest LE 3/4 length. If weather is looking real bad(snow storm), I take my very old Bibler solodome tent. 2 lbs!