Even though the S900 has some new styles, it has lost some of the older ones, particularly in the Country section. For instance, it has no Country Rock (style name). Of course it's a simple thing to just put a few Country Rock styles on the thumb drive or in User memory.
Still, there are maybe a half dozen styles that I used from the Tyros that have diappeared, so be aware that you may have to load a few. I didn't have a 3000 so can't compare to it.
The ones that are there are excellent, and even many of those with the same names are improved.
DonM