SnugPak is a good company. I have used a few of their products from time to time. The sleeping bag systems they make are excellent for several different environments. They are small enough to throw into your day pack but have a good rating. They also make a good line of liners as well. Some of their liners are made for moister wicking and work great for when you have to RON in a wet area. You can decide which liner works for you and where you are going. Along with the bags and liners they also make a good bivy bag cover. They also make a good selection of lightweight "body" shirts that will insulate and can pack to the size that will fit in the palm of your hand-they are also know as "buffalo shirts" and "wind shirts" I believe they were disigned for ice climbers. They are very compact, light and a priceless piece of gear.
Just my .02
I know that you might have gone to their website.........but just in case you haven't
http://www.snugpak.com/
Hope I was helpful