How fast are you in touch-pads?

I think the most important advantage of touch screen is that you don’t need to carry a separate key board which saves a lot of space and enhance its portability. But I am not at  all comfortable typing in a touch screen and often consumes a lot of time correcting mistakes.  But I can type pretty well in key boards because I can place my fingers well on the board.  I also get a feel of the keys while typing which is not possible in touch pads.

How good are you at touch screen typing?