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[Groeneweg Basses]

Novation A station, I have 1 myself, plus an Access Virus KC and a Nordlead 2 rack.
Sounds great...all off them.

[LostProfit]

Sounds like you want something non-generic.

Best bet is to set a price range on eBay and see what comes up. Frequent flyers at that range have been Jen SX1000, Siel PX. Don't sleep on the Casiotone CT 202 either. Nice analogue piano sound that can do cloud beats, neo soul and japanese space prog/jazz with ease.