I may be the only one who actually like Kate Spade here
. I've amassed quite a collection of KS over the years, but go mostly for her more unusual things - not the standard nylon line (although at one point I did have the Claire bag and backpack, and still own a messenger bag). I personally think that the line has a very retro/mod sensibility that is also classic (I mean, take a look at the way she is photographed and dressed!). She has a few nylon totes geared towards laptops (although it may be plain and boring), and I find the them to be very durable. I'm not entirely sure about the canvas bags. If you decide to go with her line, I'd recommend either leather or nylon.