Wow, so many sticks coming out in the coming months! There is a Street Fighter IV set being released in Japan by HORI that are now up for pre-order on Play-Asia. They come out February 12th, same day that Street Fighter IV drops in Japan.
What is strange is that the 360 version is essentially a Fighting Stick EX 2 while the PS3 version is a HORI Real Arcade Pro. What that means really is that the 360 stick has a stock HORI stick and buttons and the PS3 version has a Sanwa stick and Hori buttons. So the joystick is much better in the PS3 version and over all the build quality of the HRAPs are much better than the Fighting Stick EX2. I suppose it is because there are less 360 owners in Japan but I am still surprised they do not give people an option for both systems.
Anyway, both sticks to my knowledge are good candidates for modding and they both have Street Fighter IV art on the tops so if that is your thing you should check them out!