At some point in the past, I was trying to explore Protools since everybody seems to use it (all mixing videos). I had a good grip on Sonar's comping and all the related keyboard shortcuts.
So, while trying to learn protools, as soon as I got to the playlist part, I ran back to Sonar never to return to Protools again. IMHO Sonar's comping is so much better than Protools playlist. Only times comping didn't work for me was because i didn't know the right way of doing it

If you spend some time on comping videos, techniques and shortcuts, you won't be disappointed.