As one music producer I know explains, ProTools is the best tool to work with a ready multitrack, to make a proper mixing and to record vocals. He says it's not the best way to make music from scratch; Logic and Cubase are more suitable for this purpose. But as I understand this is a case when a lot of VST’s and MIDI are involved in the process. Also, as he says, if the goal is to make a good demo, it should be done with the software you're most comfortable with, because nowadays most of it is rather decent. ProTools is actually a hardware plus software and as I see it unless you want to make a living as a sound engineer there isn’t much need in it.

Sorry for changing the subject, but I see Roland on your avatar again so I’m curious what is your keyboard now?