Great Fit and Volume
I'm hooked on ultralight and I've been using a GoLite Breeze pack for years. I needed a pack with much larger volume for winter treks or for when I get stuck hauling the "depth charge" (bear canister). I ordered both sizes from Backcountry.com and found the medium to be a better fit (I'm 5'7"). Returning the large was painless.
I've used it with 35-40 pounds loaded and felt like I could handle another 5-10 pounds. The hip belt and load levelers function like they should and fit me perfect - which is more than I can say about many heavier and more expensive packs. And I was extra pleased with the price........