The X1 has 3 intros 4 variations, 3 fills, 1 break, and 3 endings per style. To create styles just as you'd like them, I think you would need EMC Styleworks. The piano sounds are good but not great. The styles are awesome. There is one caveat, however. Besides the 198 styles that came with the keyboard, none of the styles that I downloaded from the internet (either converted or created styles) compared to the onboard styles. On the other hand, I'm sure the new Oriental styles made by Ketron for the X1 are fantastic. Ahmed would know better. The X1 new with a hard drive and vocalizer is about $3000, but I'm starting to see them used. You definitely will want the hard drive. The vocalizer is a great option if you sing. The X1 also has a 6 or 13 switch programmable footpedal option that is great for either putting in fills and breaks without using your hands or for other things that are not convenient to access with your fingers while you're playing. You can also buy voice ram to expand the amount of voices the keyboard has, which in my opinion, is quite sparse (about 300) for a high end arranger.

I, myself, would choose a PSR 9000 over the X1, but they're both great keyboards. The PSR 9000 weighs a ton, so if you're gigging and if you're not built like Goliath, I would have second thoughts if I were you.