I personally feel, if you want to play 'piano' you probably would want to go with a DGX. The DGX has boxed keys like a piano and has that piano feel. I know my daughter could care less about the arranger features on her DGX. She loves the 'piano' and plays it as one. I love playing with a band in the room (grin) so the arranger parts are important to me. The WK series has more of those options than the DGX but in the end its what you personally are interested in that will solve the choice issue.

My daughter did use the lessons at first on her DGX but quickly went to a much more advanced form of instruction not using the built in software. She loves playing the piano so having all the other bells and whistles is not important to her.

-Linda