Glenn, I have an Osprey Kestrel pack (can't remember the size off the top of my head). It's brand new, so not looking to replace it any time soon. I haven't weighed everything but I think my base weight for pack, tent, and quilt is coming in around 8 lbs, estimating based on weights given by manufacturers.

Wandering Daisy - thanks for the tip about the R-factor chart on REI!