Hello I used to play competitively and still attend events from time to time, although my peak has definitely passed.
Name a fighting game and I've probably played it to extent, in terms of what I "main", my top three would be Street Fighter 4, Street Fighter: Third Strike and Capcom vs SNK 2.
In terms of rank.......I used hold a spot in the top 20 Cody players in Street Fighter 4 for a while, and I have won a tournament which then placed me into a Capcom Pro Tour event (which I couldn't attend unfortunately :<), otherwise I've had a few wins and top 3 positions, my scene was tough for SF4.
In terms of mains.....oh boy most of this will mean nothing to people but:
SF4 - Cody/Ibuki
SF3S - Denjin Ryu, Sean
SFA3 - V-Cody, A-Cody, A-Karin
CvS2 - C/A Cammy/Bison/Sakura
SoulCalibur 2 - Talim, Taki
Tekken 2 - Jun Kazama
Tekken 3, 5 onwards - Bryan Fury