I have the MOx8 for two years now, and as much as I can teak I can't take a sound that pleases me on a Yamaha. Really. It pleases the band, the singers... and I don't have money to go for a FA08.
If I tell you I already liked the default piano from FA08, do you believe it? I know there's so much more to work on, and instead of working on the touch curve, I worked on the piano sound, and I loved it every single second. I love the sound of Roland's SN piano. I just can't understand why people are so bitchy about this instrument. Ok, It lacks some things, but It haves a lot of pretty good things. I felt more comfortable with the FA08 in a few moments than I ever felt with MOx in two years, and yes, I used to like Yamaha more than I liked Roland.
And yes, I have to confess, I didn't knew too much of how to tweak the touch curve because it was not that obvious and I wanted to play two classical pieces, some improvs in pop-rock, and something to sing with.