It's all personal preference.
Do you prefer American control panels (tear-drop joysticks with longer throw and concave buttons), or
Japanese-style control panels (ball-tops with shorter throw and convex buttons).
I've heard that if you can get over differences, the Japanese setups can be better for fighters, but I could never get over that hump.
If you're not that familiar with Japanese sticks, try a Tekken 5 machine or anything Sega has released in the last 5 years. I guess it also depends on how much you like bright green and pink.