I use a north face recon.
i second thenorthface recon. awesome backpack
Crumpler make the best backpacks and bags for any laptops and cameras. Compared to the SwissArmy line it's like using a swiss army knife against a battleship. Checkout www.crumplerbags.com. The "salary sacrifice is $135, ouch but it is as we say here in the UK "it is the dogs bollocks!" I personally have there "sticky date" messenger bag which gets constant abuse everyday( I am a bycyle courier in London), it's waterproof! (very important in UK). They are very expensive but they are worth it, pick one up and check the materials and construction...awesome!
I've got a Wenger (the Swiss Army knife folks) backpack that's lasted me through a 14" iBook, 15" PowerBook and now my 15" MBP. Works great, has held up very well, and is still in great shape after 4 years.
It was expensive up front, but I feel like I got more than my money's worth from it, and it's still in daily use.
MacDann
I want to just say that for those of you who use the Recon by NorthFace, I'm glad you're happy with your bag, don't get my wrong, but I'd never buy this bag. I currently work for a retailer for 4-5 years who sells NorthFace backpacks, both regular (like the recon) and hiking packs, and for the price there are much better options out there with much better build quality, laptop protection, and customer service.
Booq makes a great backpack and you can sometimes find a coupon code online, they are overall a very expensive company. We got one for my dad for his birthday, I believe it was called the Mamba, really interesting design. I can't speak for it's durability, because I'm not the one using it, but he seems to like it very much.
I have 2 bags for my Powerbook that is almost 4 years old...The following two solutions have kept my powerbook dent and ding free and looking almost as new as the day I bought it, sans a few scratches on the bottom.
First is the Terminal Backpack by DaKine, really slick bag w/ a side entry for the laptop slot so your laptop is completely separated from everything else. Have had it for 4 years, built like a rock, looks almost new and I travel with it almost every day. It's got 2 inches of padding on the bottom that sits directly below the laptop itself, plus a very padded back and a harder foam padding on the front of the laptop compartment. it doesn't look that large, but it's cavernous. http://www.dakine.com/street-series/guys/packs/terminal/
I also have a Timbuk2 large messenger bag with a Waterfield Designs (www.sfbags.com) powerbook sleeve. Timbuk2 also makes a backpack style bag that's great too. I use this one too, but not as much as the DaKine bag.
Waterfield designs is a WONDERFUL company.
My fiancee has a crumpler vertical style messenger bag, but i don't know what it's called.
Also, buy yourself some iKlear to clean your laptop and keep it looking great.
Good luck.
this was the backpack i would have gotten since i loved the side pocket for the laptop. it looks like it has a lot of pockets and many other things. i just happen to want one to look more like a hiking pack like my dakine ridge and less skateboarder/school pack. that is why its i picked up the northface surge. same as the terminal but looks more like a hiking pack. dakines are built like a beast. i've had mine for 2 years and it still looks the same as the day i got it. there seems to be a lot of good suggestions here and now its up to how OP likes his pack to look like and what his needs are.
Yeah the terminal is awesome. I ordered it direct from DaKine because i could get a deal through where I work part time. The first one they sent me had a defect, it was clear they mis-stitched one of the shoulder straps to the pack and it tore out of place in 2 weeks. I called them, they overnighted me for 10am delivery a new bag and return shipping label. Like Waterfield Designs, GREAT customer service. I could not be happier with the pack.
When i get a new laptop sometime in the next year hopefully I will get a new terminal as they seem to have made some nice improvements to it since i bought mine, and pass the one I have on to someone else.