Don't let the looks of the 550 fool you. Granted it doesn't have that pro look it still is one hell of a keyboard for the money. Plus one major advantage the 550 has over the Roland is the ability to create use styles. I also think the 550 has a much better display. If the Roland allowed you to edit and create user styles then I would actually consider getting one.

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.