MH Lamina 20 does the job
Caught the sale price, and so far am pleased with the value for the price. Last used it at Camp Muir on Rainier at 10,000 feet and it did the job. It did not get that cold (40 degrees I believe) but was toasty warm. It has a small zippered pocket to stash stuff in - in this case I forgot to take my watch off and did not want to get out of bed to reach the pack to put it away. The compression sack that comes with it will save you a few bucks as well. All in all if you don't want to pay for down or you might be in damp conditions, a solid choice. The only issue is the zipper tends to get caught easily if you are not careful. 5 stars if it was not for that.