I'm afraid I can't use ANY arranger sequencer for much other than a little corrective stuff. Once you get used to the whole screen displays, simple selection and vastly better editing tools that a computer gives you, it's hard to go back to a tiny window and no mouse...

I tend to do all my sequencing (except for basic arranger capture) on my trusty Cubase VST5, and can work faster and better with that than ANY keyboard sequencer I've ever used.

For those of you on a budget, you don't need to go to the full Cubase SX3 (or the new C4), the old VST5 can be got for a song, and IMO still beats the new Cubase for MIDI stuff. And USB in and out of the computer means fast and easy sequence transfer. When it's THAT easy to run a sequencer alongside your arranger, why struggle with a tiny screen, no mouse, and 20th century sequencing workflow?