I've had a 15* model for about 3 years now, and it is a great bag, especially for this price. Not a ton of bells an whistles, and not "ultralight," but comfy and warm for sure. The water-resistant down has been pretty good when it gets wet with condensation, so quick to dry in the sun. 650 fp won't pack down to a tiny little ball, so I bought a compression sack and it does a decent job of squishing the bag down when I need the space in my pack. Quality is really high - I've never noticed losing feathers or have stuck zippers. I've slept in it the past 6 weekends, so it definitely is getting use.