Hi, in MY opinion, for the price range I think a better choice it could be either the Korg PA50 or the Yamaha PSR.
And as far it goes user styles availability, you will find more more Yamaha, Korg, Ketron( yes Ketron has more styles)....and then the Roland...(from internet) either form user groups, commercial sellers, and very little support from Roland in this area.
The Key Word is User Friendly interface, the other brands are more accesible or more intuitive as far is my own opinion, sound are ok, the ones that have speakers built in, the sound quality is not there....I like the GW7, aldo, it does not have built in speakers, it is user friendly, but it lacks of storage, only through USB transfers for styles or SMFs.
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mdorantes