If your an accomplished player I would hold out for a high end Arranger. Don't get something that 2 months from now you would have wished you didn't get in the first place. That is if you can afford a high end board. If you can't that's another story entirely. If you don't have deep pockets get a mid-range Arranger, eg., Yamaha PSR 2000/2100 Technics KN 2400/2600, Roland, uh, no; - forget Roland , Korg PA60, etc. Before you buy "try". Play them in person to get an idea if it's what you want.

But if your an accomplished player with money to burn then do yourself a favor and get a high end Arranger Keyboard, eg., Yamaha Tyros, Technics KN7000, Korg PA1x PRO, GEM Genesys PRO, Roland, uh, no; forget Roland.

Best regards,
Mike