Researching on behalf of a client that wants to upgrade to Timeslips Firebird (not sure which version yet) and will be integrating with an accounting package.  Any comments or recommendations regarding the integration with each program, Sage 50 (Peachtree) or QuickBooks, would be greatly appreciated.  Potential customer is an accounting/tax law firm so their knowledge runs deeper and their expectations will be beyond just a simple general ledger transfer. They do have specific billing requirements (although not electronic) which make Timeslips a perfect fit for them. Thanks for any comments offered.