Our church just purchased a MOTIF7ES . Wow what an incredible KB! The voices are beautiful and the arpeggiator is very useful. I haven't yet tried the sequencer. We will use it mostly as a live synth in our worship band. My experience up to this point has been with Yamaha arrangers. This is quite different, however, with the arpeggiator and phrase factory, it comes pretty close to being an arranger without the intros and endings. I think one can create their own intros and endings in the phrase factory, too. Anyway it's an awesome keyboard.
Tim