FLStudio but since the dreadful release of Windows 8, after being an exclusive Windows user, I now try to do as much on OS X as possible so I can't wait for a native OS X version to be released ...
FLStudio 12 as an iOS customer. I know the Alpha is available for free for Windows users, but I have not purchased the software on that OS, but have purchased the full version on iOS, along with a few sample ...