They only have the EM-55 and the VA-76 for this show.as far as arrangers.

here is a link for their products....
http://www.rolandus.com/CURRENT/winter_namm_2002.html

Here's the EM-55

The EM-55 Interactive Keyboard offers beginners and pros thousands of top-quality Roland sounds and hundreds of musical styles-all in a compact, 5-octave keyboard with a built-in sound system. But this new kid on the block also makes performing music fun, thanks to new Session Partner Pads for triggering live phrases and a D-Beam controller with 50 ready-to-use templates.

Features:

61-note velocity-sensitive keyboard brings new interactive features to an affordable price
64-voice/32-part multitimbral sound engine with 3,559 Tones + 116 drum kits
Up to 128 onboard musical styles (64 ROM styles and 64 via floppy disk)
Helpful Music Assistant with setup templates for 100 popular songs
Light-sensing D-Beam with preset templates for controlling various functions
New Session Partner Pads for triggering phrases and muting parts
Create cool DJ mixes using DJ Pads with 64 realtime phrases
16-track song recorder for recording performances or loading Standard MIDI Files
Game function (Guess the Tone and Guess the Chord) helps students learn about music using interactive games
Built-in stereo sound system and 3.5" floppy drive