Sequencers, New to Mac software sequencers Options

[Loki_malito]

Hey everyone!
This is my first time posting so please bare with me as I might be asking something that was previously answered. I am into Goth/industrial and recently made the jump from pc's to Mac's. Now I own two. When I used to use Fruityloops as my sequencing app. It is a great app. Unfortunately for me it isn't for Mac. I have the Digi 002 as my hard disk recording program but I can't decide what would make a "professional" sequencer with enough professional features and won't make me an engineer but will allow me the ease to continue to be a musician. Anyone have any suggestions? Any help would be appreciated!
Thanks
Loki