I've come to accept that certain sequencers are aimed at different styles of production. Logic, Cubase, Sonar and Nuendo are general purpose studio sequencers, offering a fair amount of flexibility in their design, but possibly falling short in terms of usability in specialist areas.

Then there are programs targeted at those niche groups - Pro Tools towards mixdown, Reason towards budget studio in a box solutions, FL Studio towards step sequencer centered loop composition/ quick arrangement times and Ableton Live towards a live sequencing instrument. You could most probably use any of these tools to complete any given task with enough fiddling, but really you should choose your sequencer based on what you intend to do with it at the end of the day. Personally I'm gravitating more towards the Ableton Live thing since it functions pretty dandy as a studio sequencer replacing FL Studio - which even after release 6 has some things that still sh1t me terribly (though I'm going to miss internal controllers).