[w_t_payne]

I have used TortoiseSVN on Win32; TortoiseGit on Win32 and TortoiseHg on OSX. I found TortoiseSVN under Win32 to be the simplest & easiest to use of these three options.

TortoiseGit was a little difficult to use because it tried to map Git concepts onto the original TortoiseSVN concepts ... which confused us quite a lot as we were just trying to learn Git at the time, and the second set of concepts added to the confusion.

I can't quite remember what the issue with TortoiseHg on OSX was (It was 2 years ago that I tried) ... but it might have been something to do with the shell integration rather than the Hg-ness of it.

Disclaimer: I currently use command-line Git for everything, but that's mostly because I am currently operating in a very hardcore-software-developer-oriented environment rather than the non-software-developer-domain-expert-oriented environment that the TortoiseXXX tools suit.