I personally think that the problem of the cable packing in on a non cordless mouse will prevent me ever buying a corded mouse ever again. Just this Saturday gone a mouse at work (non cordless) suddenly found it's little rodent self flying out the door to land in a well positioned skip. I was not too fussed about the fact that I had not a mouse to replace it with. It's tail was broken, and for a mouse that is terminal.
Plus there is the fact that non-optical mice suffer from dirty balls. I find cleaning them once a week when there is the option of an optical one that never needs a clean too tedious.
As for the 'reaction time' i have never ever though of this. Is there a reaction delay with cordless mice? Is so what? Be interesting to find out.