I ride a rigid SS with 180mm rotors and BB5 brakes. I am 235lbs and when I brake hard the front wheel shifts in the dropouts enough so that the rotor rubs and the whole wheel is shifted to the side. I have the stock quick releases basically as tight as I can get them but they still move under stress. I've heard that internal cam quick releases like the Shimano XT and XTR are very good. Are they? Or is there another type that you would suggest? I'm willing to spend $50 or so for a nice set because I'm just looking for something that I can use so I don't have to stop every time I brake hard to re-adjust my wheel alignment.