My 1st conference was last year. I would recommend taking the Business Basics. There is a lot of in class discussion about running a DMM business that I found useful plus it is more geared toward networking with fellow classmates then I would imaging the Quickbooks class is.
I’m very computer literate so it would not be hard for me to learn Quickbooks with online courses, Youtube videos and such. At this point in my business, I do not need the power of Quickbooks and I am not convinced that Quickbooks would be the solution as there are other alternatives such as Freshbooks.com or slickpie.com or even Quickbooks online.