You honestly get what you pay for
😀
I have a
bbp bag, got it after someone else on this forum raved about his. Laptop compartment is separate from the rest of the bag and is top-loading and has water-resistant zipper (unbelievably useful). Strap converts from backpack to messenger bag and back to backpack whenever you want - a little bit weird to get used to, but definitely useful (and imo the backpack strap looks a lot nicer than the single strap for some reason, don't quite like how everything's just dangling around with the single strap, but meh, not much of an issue). Got a few people asking me about my bag at WWDC too
😀 Insanely useful for travelling, has a gazillion pockets for everything I possibly want to put in there. I just wish there was a way to divide the main compartment, but it's not a biggie. It's also fairly comfortable, although I end up being hunched over once in a while because it's fairly low-hanging.
I'm very much not a fan of the idea of using a sleeve - I had a couple, and they added so much thickness to the laptop that I just stopped using them. It was more convenient for me to have the laptop in a separate small bag than to have the twice as thick laptop with sleeve using up valuable space in my backpacks and messenger bags. A lot of bags also have pretty pathetic laptop compartments as well, so...
In addition to the bbp bag, I have some timbuk2 and crumpler bags I'd highly recommend. Laptop compartments for those weren't as nice as the bbp one, but still great bags.