I'm not a sleeping bag expert, before this bag I have never owned an expensive bag. The bag packs very small and light about 8"x10" when fully compressed and the listed weight is right on. The lining is silky to the touch. My only problem is that the bag is a bit narrow for me, but I am a overweight (5'9" / 240lbs) and I toss and turn in my sleep. If it has 3 more inches in circumference in the shoulders it would be perfect.
The bag is a bit warm if the outside temperature is higher than 40 degrees, with no way to vent the foot there is not much you can do about it other than taking your arms out. The warmth is just about right for the 10-40 degree range with a lightweight base layer. The cost of the decreased weight is versatility.