I had simulair doubts about the PSR740.
But George Kay hooked me up with a Roland G1000, fabulous keyboard.
Plays midi from floppy or ZIP disk!, great sounds, cool styles, lot of user styles available, great 76 keys with excellent feel.
It takes a little while to get to know your way around on this board but that is with every new board you buy.
Thanks George, I enjoy it every day.