Touchscreen technology is generally little understood by the public at large (including many product reviewers!). Many people, including me, still haven't got the arms around all of it yet. Therefore I wish to point you to a very useful article to educate yourself: "Know your touchscreens" at http://www.computerworld.com/s/article/9183565/Know_your_touch_screens?source=rss_hardware
Be aware that as you shop for your next touch-enabled videocam, camera, mobile phone, tablet PC, TV, etc, that not all touchscreens are alike in capability. If you had ever owned a PDA back then, you will know how difficult it was to use a stylus to write on your PDA screen. The iPhone touchscreen has come a long way since then. I have handled an imitation made-in-China iPhone that has a most exasperating touchscreen, which awoke me to the fact that indeed there are bad touchscreens. Since then, I have learned that capacitive touchscreen is superior to resistive touchscreen, and that multitouch is something worth watching out for.
Bottomline: if you want to maximize the enjoyment of the next touch-enabled gadget you buy, see if it has the magic touch before you part with your money.