Old HP504 or new FP-30X for the same price ?

[rudnicj]

Hi

Which learning piano would you choose for the same price: the 7-year-old HP504 with a premium PHA-4 keyboard in mint condition or the new FP-30X with a standard PHA-4 keyboard? The HP504 has better speakers. The FP-30X has a new BMC (Behavior Modeling Core) chip and Bluetooth connectivity. I can't find information on whether the HP504 uses behavior modeling technology.