John,
I'm in the market for a new backpack too. I found this review

http://www.best-backpack-guide.com/motorcycle-backpack.html

Has some options for your laptop. The write up doesn't include Kriega which I have to say is becoming my first choice. Like the add on packs. Here is a review link.

http://www.kriega.us/motorcycle-backpack-reviews/

I don't have a true review for you but figured I'd pitch in. What are your thoughts?
Brett

Blue/White, Battery Relocated, 155/45's, AI removed, Cocktail shakers