Flying Club Billing

I am part of a very small flying club that shares the cost and
ownership of an aircraft.

We've been handling the billing for flights and such for a number of
years with simple versions of quickbooks and its, well, just ok at
handling this. Not particularly well suited, but cheap. Unfortunately
a bit cumbersome and could probably do more if I wanted to become a
quickbooks guru (which I really would prefer not to).

Is there anything inexpensive out there that does a great job of
keeping track of invoices, fuel reimbursements, credits for expenses
and electronic (email) billing?

I am trying not to make a career out of billing for the club (my
contribution) so I thought I would ask.

Thanks