Currently there is a good selection of joysticks and pads that work well with Marvel vs. Capcom 3 are already in stores. Some are marked with different games like Street Fighter or BlazBlue, and others that are colored with a game, but simply very good drivers.
As a big fan of Marvel vs. Capcom, you may want to use the joystick brand emerging. Was proposed for the fans and the hardcore, high quality, so do not really have much to lose, and you do it in style too.
If you want to go the hard way and get the best of the best, you want to look at some of the fightsticks high end. These may begin to be quite expensive but are the best in performance and do. You'll have no problem transferring the combos and patterns in your living room into the gallery. In addition, you will be able to kill users online, without even a hiccup. Get two of them and bring the game room. Playing online is great, but beating your friend that his face is even better.