I've tried them all and settled on iRatchet. I've been been a registered user of iRatchet now for a few months now. I use it on a daily basis and I've become very familiar with its strengths and weaknesses.

EASE OF USE: 5/5
iRatchet just makes sense. I was up and running making invoices and tracking projects in under 5 minutes from my first launch. The interface is clean and thoughtfully designed. Projects follow a logical workflow that helps keeps thing in order. iRatchet integrates with iCal seamlessly to help keep track of invoices that are past due and projects that need attention. It's also very simple to import clients from Address Book. iRatchet even has the option to make auto-backups to prevent data loss.

SUPPORT / DOCUMENTATION: 5/5
The developer is extremely committed to this product as evidenced by his instantaneous replies to tech support questions both via email and his user forum. If a bug is reported there is a new version released with a fix in a matter of days. Try getting that kind of support from Intuit. The documentation could be a little better but the speed most questions are responded to more than makes up for it.

FEATURES: 4/5
This is the only area that needs improvement. iRatchet does a fantastic job of tracking projects and creating invoices but it lacks reporting features. The ability to show income, taxes due, product sales per category etc. would make The developer has indicated reporting will be added soon.

QUALITY / STABILITY: 5/5
iRatchet has never crashed on me. Any minor issues I have had with the program were cleared up within hours of reporting them to the developer.

PRICE: 5/5
Under $50 for an elegant, easy to use application that makes managing your business a snap. It pays for itself in no time.