Elwood.., you'll soon realize that comparing the feature/spec list to PRICE between arrangers and workstations is a waste of time my friend ;-) That's just how it is.

Just have a look at the price difference between the current Yamaha Tyros 3 and the top end Motif XS-8. One is only 61 keys and made of plastic.., while the other is built like a tank with 88 graded hammer action keys. Yet look at the price difference between the two (while comparing the spec list)...
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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.