I have a Mountain Hardwear Ratio 32, and I really like it. It's only 650 fill down, but it doesn't weigh much, and squeezes down to somewhere between a grapefruit and one of those mini watermelons if you use a good compression sack. Best part is that you can routinely find them on sale for around 180$ for the regular length one, and I think I paid an extra 20$ for the long. For example, backcountrygear.com has the regular length left zip for 170 right now.