I agree with you.. People just don't realize what these top end arrangers are capable of doing. Even the lower end arrangers sound great.. I may have some dislikes about my PSR-550, but I still think there are quite a few acoustic instruments on the 550 that sound better than my old Roland XP-60, and Yamaha EX-7, and those were pro keyboards.

Squeak
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GEAR: Yamaha MOXF-6, Casio MZX-500, Roland Juno-Di, M-Audio Venom, Roland RS-70, Yamaha PSR S700, M-Audio Axiom Pro-61 (Midi Controller). SOFTWARE: Mixcraft-7, PowerTracks Pro Audio 2013, Beat Thang Virtual, Dimension Le.