I just got the Phoenix 20. It is super warm, but I did need to build a pad to fit in the foot box of my Burrow 20. The reflectix pad in the over quilt seems really warm so far. Here is a picture of the pad:
Question for all of you repping the incubator. Do you actually backpack with them or are you just car campers? Doesn't seem worth it due to the incubator being an extra 7.35 ounces.