Lowepro CompuTrekker Plus AW or ThinkTank StreetWalker HardDrive?

Just looking for a suitable camera bag with a laptop compartment for traveling, I heard the StreetWalker is much bigger than the CompuTrekker?

I already have a LowePro Flipside 400AW but I wasn't able to bring it because I had too much carry ons as it is on the airplane rides. I don't want anything too bulky since I'm a short asian as it is..I just want to be able to have about maybe three lenses and my camera body with me on the trips really. I use the Flipside daily but again it doesn't store my laptop which I would love and knock out two bags to one. I go on road trips almost every week / two weeks and sometimes flying.

Thanks for the advice guys, I've been on this hunt for four days now and still can't decide. :S

EDIT: I have a 15.6" sony vaio, so it's a bit bulkier than the MBP.

I got the SW HD for the same reason - so I could put my laptop in it but took it back. That thing is huge. Just to be sure you heard right, it is HUGE! I've now got everything I own with room to spare in a Streetwalker Pro and then got Artificial Intelligence 17 for my laptop. Had to settle for two carry on bags and this works really well for me.

The Lowepro Computrekker Plus is huge.
I have one, and use it frequently, but prefer a roller case for my gear.

Last time I loaded up my Computrekker plus I put this in it
15" laptop (will fit up to 17")
1x1dmk4 with 16-35 f2.8
1x1dmk3 with 70-200 f2.8
24-70 f2.8
2x 580ex
1.4x converter, 2x spare batteries, 3 sets of flash batteries, laptop charger, wireless modem, card reader, iPad in otterBox defender.
And strapped to the outside I had a short light stand and brolly

I think for a laptop, camera and 2-3 lenses you would be better served looking elsewhere.
I think the bigger Thinktank Urban Disguises fit a laptop.

The CompuTrekker Plus AW has been discontinued for some time by the way. Lowepro replaced their CompuTrekker AW and CompuTrekker Plus AW with the Pro Runner 350 AW and Pro Runner 450 AW. Personally, I think the new designs are better.