Synth Site |  Casio |  CTK-540

All in all, I'd recommend it as a first synth to people without money to spare who don't know of any used-instrument stores. Keep in mind, though, that you'll NEED to use headphones or external speakers - the built-in pair is the worst I've ever heard.

It would have made a decent extra controller if they had bothered to put in a sustain-pedal jack or MIDI octave-transpose buttons.

Try the "Samba" rhythm - it's deliciously terrible.

Random neat perk: The percussion map conforms to General MIDI, and the keys are labeled with little pictures of the instruments.