Wow... Thanks everyone for taking the time to respond... Think I am more confused now.
First off let me tell you what I use the keyboard for. I use it to compose; I am not a slick musician, or even a musician like most of you folks who can do live gigs. I do pretty well on filling in the leads and what not, but I rely on the board and style to create a song. I never know what I'm going to write till I fiddle with some styles and it comes out. Heck my best hit Island Love was done on a 3000...

I have messed with the software and what not; I shelled out $500 for Sonar, a new computer new sound card and pulled out my hair for 6 months. I ended up going back to my old recording gear.

I do not have the time since I work about 50,60 hours a week at the real job and this is a nice hobby that pays a little bit of $...

I'm thinking I try used tyros 4, sell the s910 and at the end of the month see how many coins are left over and maybe add an XF.

The problem with workstations and Software is the time it takes to learn it all which I do not have. As far as the tyros demo's my socks were not blow off as everything posted like to use the vocal sounds of the unit.

I'm looking for, Rock, Pop and Latin and the rest I will not use very much....

Hey, once again thanks for the input and it's much appreciated!