I have the RS-5.the best thing about it is that you have so much control on the sound.and you have some of the XV DRUMS(THE BEST)and very good sounds too.nothing bad I have had with it till now.Except that I wish from Roland (which is Impossible) to put octaves Control when you are layering.meaning each sound can be also in a different octave when they are layered.
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Vic:)