It would be difficult to top the Tyros when it comes to overall sound quality, ease of operation and features. Additionally, there are more 3rd party style files available for Yamaha keyboards than all other makes combined. Consequently, this will allow you to expand the board's style diversity by a significant degree.

The other consideration in selecting the Tyros is technical support from forums such as this one and PSR Tutorial which will provide you with almost instant answers to technical questions pertaining to the keyboard's operation.

Good luck on your decission,

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)