We're a very small company with 6 employees, and we are currently using single-user QB2003Pro and Basic Payroll (or whatever it's called).
We bought QB2006Pro last week and it's still in the box. After seeing all of the fixes that are now being made (through R3), our thinking is that it might make sense to wait a little before starting to use QB2006. I assume that probably makes sense, and can't hurt, right? Seems like Intuit is fixing problems rather quickly.
QB2006Pro ended up only costing us under $139. I thought that was great. We bought it at Staples which had an instant rebate of $20 off the $179 price, and we had a $20-off coupon that we received in the mail from Intuit (which expires on 12/31/2005). We used American Express to make the purchase which gives an additional 2% off on any purchases we make at Staples. And, we have some kind of Business Rewards card with Staples that results in some future discounts I think.