The 2100 isn't that much better than the 2000.

Either get a 2000, or wait and a get a tyros.

(The 2100 only offers USB connectivity and a few new voices. The usb connectivity doesn't do anything a midi cable can't do.)

The 740 and the 2000 are not that different either, unless MEMORY is your thing -- the 2000 has more user memory, which, does seem to be needed for live performances.

Sound wise, I'd wait and get the tyros, otherwise, you are not moving up that far from the 740.

OR, to add similar sounds to the mega voices (so called on the tyros) get a Roland XV sound module for $800 or so (XV5050) and play that with/from your 740. If sounds is all you really need. The XV5050 is a better soundset than what is on the ROLAND FANTOM keyboard. (Similar, but better.)

If you use alot of styles, the 740 does need help since it only loads 3 new ones. I use a PC to store styles and the program one man band to play styles thru the 740. Generally though I do my "own" midi backing and don't prefer to use styles at all.

hope that helps,
Cathy http://www.roncat.net/private.htm