For the past two years I've been using SmartSVN as my graphical subversion tool of choice on OSX, mainly because it seemed more feature rich and stable than the others. On the MacPro with 3gig of RAM I used to have at work it was great, I didn't notice the bloat associated with its Java foundation, but on my current 1.33ghz PowerBook with only 1.2gb of RAM the bloat really is noticeable - it can take easily use more virtual memory than anything else running (about 700mb is typical), and take longer to become active again when swapping between apps. So after a quick look at similar tools again I've decided to try out ZigVersion, a native C application which makes it much faster. While the workflow is definitely different, it seems pretty good so far, though it's early days yet. I'll let you know how it goes.