Travel Products - Local bag big enough to carry product samples

Can anyone recommend a bag to carry a box of product samples and a notebook? Something that has the capacity of 3 laptops total (laptop/notebook + Samples). I am looking for something that I can carry into meeting rooms that does not have wheels.
Was looking at the Tumi Alpha as a possibility.
Thanks

Something like one of these? The expandable version seems great and B&R are guaranteed for life.

If you go to the homepage they offer a 20% discount code and if you sign up for emails you will get even more off....

http://www.sierratradingpost.com/s~briggs/briggs-and-riley~b~2003/

I have an entire set of B&R bags that I purchased at Sierra that saved me well over 50% off lowest retail I could find anywhere else.