This was my first high quality down sleeping bag purchase, right here from Backcountry. I bought a Long for myself (6'/175lbs) and a Regular for my GF (5'4"). The bags weigh in at 910g (32oz) for the Long and 820g (29oz) for the Regular, in their supplied stash bags. I can fit in the regular, but I found the extra space the Long provided me very comfortable.
First use was a winter hike in the Blue Mountains in Australia, where night time temps dropped to a easy 11C/52F, but there was a bit of wind and high humidity thanks to night time fog. Cold! Once zipped up in our Arroyo's we were warm! Too warm almost. I was wearing Icebreaker merino long pants and shirt and I had to unzip the top 15" of the zipper to cool down a bit. No cold spots, just very comfy! Thank heaven for that hood on these bags, with that cold fog rolling in! The bag worked well with our sleeping pads, the Therm-a-Rest RidgeRest Solar pads, the full thickness ones. These come 6' long, but I have cut them short to 4', which is all you need for torso and upper legs. We also use the Air Pillow UL, the corn yellow ones, and we put our empty sleeping bags under our feet. (I am very much allergic to inflatable pads, since I had a few leak on me!) Downsides to this bag: the zipper gets a bit fiddly near the collar, as there is a draft tube and the collar, which is a lot of thin fabric that wants to get caught in the zipper. Overall: a highly recommended sleeping bag and pad combination!
PS: After we returned from this weekend, I weighed the bags again: 972g and 872g. They had absorbed 62g/2.2oz and 52g/1.8oz of moist! Drying your down bag is important!