This aside, I understand the wish to have your accounting be on a rock solid foundation - I feel the same. No software is perfect, but you can still achieve it: keep your data, and if you need extra assurance, your reports, in version control; use double entry bookkeeping; regularly reconcile with real world balances; and perhaps run extra correctness checks. (#plaintextaccounting FTW.)
It is now very hard to miss any mistake made by your software - you'll see and address it right away.