I've always bought the heavy Colemans or cheap temporary ones but I went camping with a light one and almost froze to death. This highly reviewed model is older but works for me. It's just slightly lower in the down department (550) but should be ok for 3 seasons? I don't plan to hike/camp in 0 degrees. Slept in it with just a t shirt and boxers and was plenty warm at 40 overnight.
This review was written in the old system and had content requirements that are different than reviews written today.