omg, I'm an actual old fart accountant...
"quickbooks" is good enough for small businesses (though I 100% appreciate the problems it has)
if you need something robust with more controls, you either just use netsuite/etc. or something more specialized for your industry
and FFS, only go the route of custom code as a last resort, you are better off slightly changing your business process to match whatever workflow/etc. is in the OTS ERP instead of having some cheap crappy dev (only crappy since most who do ERP programming are often not well paid) shoehorn your (likely ill conceived) process or report into the existing ERP...
and FFS, only go the route of custom code as a last resort, you are better off slightly changing your business process to match whatever workflow/etc. is in the OTS ERP instead of having some cheap crappy dev (only crappy since most who do ERP programming are often not well paid) shoehorn your (likely ill conceived) process or report into the existing ERP...