i use quickbooks, always have since V1.0 back in 1998 i think.
my explaination when asked is " MYOB was developed by the tax office and Quicken was made for business"
meaning , at the end of the day with quicken......... if you don't like the result then you can change things, but with MYOB you are STUCK with it.
its sooooooooooo much harder to change mistakes in MYOB then in quicken/quickbooks ( MAKE SURE you research what version is best for you )
also make sure you ask about the ongoing costs for updates and support.
tim