Quickbook IS NOT simple guys and gals. I have used it for many years, even my wife who has acctg degree does not know all yet and get stumped once in a while. And we are fast learners (get good grades in school).
It has inventory functions, etc, etc and will probably confuse 90% of the people.

I don't know how easy compared to quicken. I suggest that you borrow or get a trial version first and see how comfortable you are with the program. That's how I got into quickbooks - but my primary business is not music.