Islander,
I had the exact same dilemna myself. I guess I'm somewhat fortunate in that my musical hobby helps me fund my love of musical instruments.
What I did was, I sold my PSR 9000, bought a Tyros, then I purchased a used Korg Triton on Ebay for about $1,400.00.
I now have the best of both worlds. I now plug the Korg into the Tyro to use the speaker system of the Tyros and I also MIDI link both keyboards so that I can trigger the Tyros Sounds from the Triton and visa-versa.
I know this solution is expensive, but for me it is loads of fun and satisfies all my requirements.
Now you just have to hope you win the lottery!!! LOL
Al G
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Al
Pa4x - LD Systems Maui 28 - Mackie Thumps