I own a couple of fight sticks - a Hori stick for Xbox 360, and a Capcom fighting stick that was originally for PS2, but I bought a USB adapter which enables me to use it for my PS3 fighting games.
I'm an odd duck. I like Street Fighter all right but it is not my favorite series. I prefer 3-D fighting games over 2-D fighting games, and my favorite series by far is Sega's Virtua Fighter series, although I also enjoy Namco and Tecmo fighting games. Among 2-D fighting games, my favorites are Mortal Kombat, Guilty Gear, and BlazBlue.