My thoughts. You may already have what you desire in the Genos. From everything I've heard and read, the piano voices on the Genos are very good, more than sufficient for any Arranger use that I can think of. You state that you are in the 'learning' stage for (solo?) piano, which means that you will not be playing solo piano on gigs in the near future. For all other uses, the Genos piano(s) should be more than sufficient. We all agree on the immense satisfaction of playing a premium stage (or great acoustic) piano, especially in the relaxed environment of the home. However, until your skill level rises to the point of being able to do solo piano gigs or significant parts of regular gigs, I would use the Genos piano for any piano parts in arranger use and use my Roland RD2000 (great piano, btw) at home to build my pianistic skills and for my personal playing enjoyment.
SOooo, my recommendation; SAVE YOUR MONEY, you're already in 'hog heaven'
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chas