Hi Diki.
If I were an arranger user, I would feel robbed that I had to buy a PA2Xpro AS WELL as a Mediastation.
Using your own logic here....
If I were to take that attitude then in your book I should feel robbed that I had to buy an OASYS as well as the Meidastation.
I really don't think you truly get anything I've just said above. It's almost like it's unacceptable to you to own more than one keyboard if you own a Meidastation.
Regards
James