I use Quickbook Premier. I love it. Like BLue Diamon says, you can create estimates, sale orders, turn them into invoices, ship packages and process credit cards right in the software. I can enter wax, wicks and fragrances as inventory and then put them together to form a candle in my enverntory. I had a basic version of QB before and liked its ease of use. But I wanted the ability to manufacture from inventory. So I went on ebay, got an idea how much they were selling the beefed up version for, bid on one and then got one that was unopened with a rebate for upgrading. New, the software was $500 [i think] I paid $300 then got $120 back for the upgrade. So I was out $180. For me, it has been well worth it. I would think you could get and even better price now as it is a few years old. [2003]. I ought to see what I could sell my origional version for and make back some of that $180