I am new to keyboards, and started acquiring equipment for my home studio. I have a Hammond Aurora with internal Leslie, Yamaha CP35, and Yamaha DX7.
The Hammond was a good solution for me due to pricing ($300.00) and space requirements. While it could never perform like a B-3, it certainly fills the need for the B-3 sound (It can get pretty gritty & raunchy with the right tab combinations. The tone bars, dual registers, and bass pedals are a real asset you can't get from a synth keyboard.