I have tried Reaper, but I own Nuendo (I like this program a lot), PT, Sequoia, etc... they're all so easy and similar (for me)
WaveLab... makes me think too often about what to do next?
It's superpowerful though - and it does makes me want to keep going with it.
I have the AudioCube (pc) version of WL but am not sure the Mac version will include this feature?