As far as electronic organs go, in my opinion Hammond Tonewheel Organs are the best The story starts in 1967, when I first saw "The Nice", who became "Emerson, Lake Palmer" later on.A necessary step I suppose...
Yamaha DJX Mk1 I cannot say anything bad about this machine - it almost lacks nothing unless you are a home organist looking for auto-RHUMBA arrangements. The DJX is full of rave and electro type rhythms...
CASIO DG1/10/20 The DG stands for DIGITAL GUITAR in case you had not guessed and you are likely to find all of the above models on Ebay though the DG1 is a rarity (there are others!!) and the other two...