I had a Quick Cam, tried guiding with that. I then had a ToUCam for guiding, and now have a Q-Guider. If I had my time again, I wouldn't bother with the first two, would just get the Q-Guider (or wait, save for it, then get it). From my experience there is little comparison in terms of ease of use, sensitivity and FOV.
If you want a ToUCam the only place I know to buy them new is:
http://www.telescopes-astronomy.com.au/
Roger.