Which should I concentrate on first..

I'm looking to start doing some PvP, not really experienced with it but kind of getting bored with just PvE stuff. I zone PvP sometimes, but want to obviously get into arena and what not.

So, out of the toons I am about to list that I have, which toon should I concentrate on and would be best for a fairly new PvP'r. I've been playing since 04.

I have a lvl 50 ill/rad, lvl 34 ice/Men blaster, lvl 28 psy/em blaster, lvl 22 men/psi dom, and started a sonic/cold cor. I have others, but really on listed those that I thought would be pvp worthy. I do have a lvl 50 bs/regen and lvl 45 spine/wp scrap, but not sure about those two.

Haven't been sure which one would be best so haven't really been concentrating on any single one. So of these, which would probably be the best to start with?

the ill/rad will be an effective duelist and 2v2 partner, and good disruption...but the psi/em is basically the best thing u can use to effectively *learn* pvp....avoid starting out on the bs/regen it will cause some bad habits

yeah, i have pvp'd some with my ill/rad in RV, hes got about 90% global recharge from IO's right now

damn he called me kid. i got told