After finding my North Face Recon backpack being a little too bulky to use as a standalone laptop backpack, I decided to get a Timbuk2 Parkside in Abyss color. I was debating on this one and some NF backpacks, but the NF did not have a water bottle holder.
The Parkside is a great laptop backpack-- it has just the right amount of compartments, and is spacious yet slim. It fits the 15" MBP quite well, and I feel pretty safe tucking my MBP in without a sleeve. As an added bonus, there's a bottle opener built onto one of the straps.
I would like to see more padding on the straps-- they're pretty thin. But aside from that, no other major complaints.