I just bought a Stoic Vamp 15F Down bag, from Backcountry.com, pack weight is 2.9 pounds the reveiws were good and It was on sale for $143. It is still there if your interested. If you dont like it...

for your price range you should look into a North Face Cat's Meow 20degree bag. It's a sythetic bag but still some what light weight at 2lbs 10 oz. A down bag of the higher quality power fills, I'm...

there are so many quality sleeping bags on the market now it's hard to suggest any one over another. Down will be the lightest, but if you're going into some wet climate, a slightly heavier synthetic...

I have the Kelty Cosmic 20 degree bag, It was reasonably affordable. I plan on getting a liner for as well. I am 5' 11" and I needed a Long.

http://www.kelty.com/p-457-cosmic-down-20.aspx