Hey Deane,i can not decide for you,but go for the Sd9,the new liveguitars are so much better than from the Audya and you miss them on your Sd7,the Sd7 is in my opinion a good keyboard the Sd9 is an real live band,the whole Sd9 sounds so much better than the Audya,it's open,more pressure and the new presetsounds,organs,strings,guitars,synth,pad,brass etc.are awesome