Which controllers burn the DC controller port

Anybody remember what type controller burns the DC controller port after some tim? Was it the Mad Catz ones?
I think that was one of them...generally the thrid party ones with in-built vibration are more likely to do this.
My controller port burnt out and I've never used a 3rd party product on my DC. So it could happen no matter what you do, but sticking to official SEGA products definetely decreases the chances.
I don't know how long it takes until they burn out, however I'm using a MadCatz for over a year now on mine and it stille works.
From what I understand, burnouts take place because ppl connect and disconnect controllers with the DC turned on... This is the first I hear of a certain kind of controller causing this...