Way better than a generic bag.
Crumplers are great because they expand. I can fit my HP DV 9500 into the sleeve snugly. It's not a fight, but there's no extra room. It's a 17" but it's pretty thin, so if you are carrying a desktop replacement book from a few years ago, this bag probably won't work. My only real complaint is that the pen holders aren't deep, and they are right in the middle of the bag. so I have broken a couple pens this way. Better to stick them somewhere else. Otherwise, I love this bag, and it's making the guys at work jealous, but hey, I bought it MYSELF. No crappy Targus for me, pal. Heck no.