I use this pack for almost every ride. Adequate space for first aid kit, a rain layer, extra food, cameras, tools, tubes, pads, etc. I find the small base side pocket with a forward facing zipper is ideal for my multi tool, because you can access it without taking the pack off. The outermost portion is handy for stowing knee pads or your full face if you're on a long climb. I appreciate the full sized bladder. There are two fleece lined pockets- the internal one is handy for my cell phone or GoPro, and I save the larger glasses pocket for the...well, glasses.
I've got a lot of other packs, but I choose this one 98% of the time. (For serious adventures, the Apex may be more appropriate. For my road rides, I go with my Amp.)