The selection of sounds is adequate; if you needed one keyboard to get yourself

started with a MIDI sequencer, this wouldn't be a bad choice. I agree with

other users who have written comments here -- the user interface is a bit

bothersome. You can edit most every parameter of a sound, however,

though you really would be better off doing it with a voice editor/librarian

program. The only other annoying thing about this board is the voice allocation. When

you ask the U20 to play a lot of data near its upper note limit, the keyboard

seems to "slow down" in a sense. That is, notes aren't triggered immediately

as they're received over the wire -- there's a bit of a delay. Most of the

time, one doesn't run into this, however. Word has it that a later ROM version

might exhibit a slightly different behavior. Other users have complained about the keyboard on the unit itself -- mainly

the rubber pads that are used to trigger the notes. I've also noticed that

they are affected by small particles of dirt. On the other hand, the keyboard

is easy to disassemble (too many screws!); one can easily clean the pads

and save some money. FYI: if you need to replace the green PC-board-like

membrane under the keyboard itself, you can order one directly from Roland

for $35 + shipping.