Gossamer Gear Loris vs Mountainsmith Zerk 25

I recently did a review of the Mountainsmith Zerk 25 and said that I wanted to test it head to head against the Loris. There is one clear winner for me, and I was actually shocked at how quickly I picked one over the other. If any of you have the GG Loris please let me know your thoughts (good and bad) about this pack.