You work on versions, do you? After using it at my last job, I've found that my work flow completely depends on it. You can tell it was an application designed for the mac, not just by the way it looks, but by the way it works ('Reveal in Finder'? Thank you!). I love how easy it is to see view my changes. I love how easy it is to see that there are changes in the repository, and view what those changes are. I love that you can view the full history of a file, along with who committed each change, the commit note for it, and the diff.

I have to say, though, that if the app was only $10 I probably would have bought it for personal use 9 months ago. As it stands, I'm still struggling with the price, even though I'll probably cave in and buy it after the trial ends on my new computer.