I just registered for this site and I did some searching around, but maybe not enough to find a post concerning good computer commuting bags. I have been looking online for a while now and I have gone into a bunch of bike shops to check out their gear, but for the most part they carry messenger bags with padded laptop sleeves (Yay!), but then uncomfortable straps. I am fairly well endowed in the chest region, and having messenger bags slung across my front can get quite uncomfortable.

I don't want to get panniers, because I am worried all of that jostling will really mess with my brand new 15.4" macbook. The few backpacks that I have tried on were alright. I was wondering if anyone had any good suggestions as to where I could find a good, comfortable bag.

I would like the bag to not only fit my computer, but also a lunch and a change of clothes. I would prefer it to be expandable, so that I could take it to get groceries and whatnot. Alas, we can't have it all, but any information/ tips/ links would be greatly appreciated!!!

Thanks so much!