... and I'm sold on the shorter underquilt. Just back from an overnight trip in the Wild Dog Mtns.
With my first underquilt, a nest, I could never rig it without comprising the loft under my heels. I ended up using my pad under my feet.
Then I went to the Snugfit. Perfect in every respect, but overkill for most trips.
Now with my yeti and my pad in between the double layers of my BB, I have never slept so well. I fell asleep on my back as soon as I climbed in, which is unusual for me, a diehard side sleeper.