The Ambika is a fantastic little synth with a huge amount of power at a relatively low price. It can be six-part multi-timbral or, as I'm using it here, polyphonic. (Though, if you look carefully, I forgot to switch voice six to the same setting so this is five note polyphony!)
If you have the money, I can definitely recommend the Ambika. It holds its own against synths that cost four or five times as much. Seriously wild.