There are three main wort chillers out there. Immersion Chiller (or IC) that you put into the hot wort, running cold water through it to chill. A CFC or Counter Flow Chiller, where you run water through it, around a copper coil that the wort runs through to chill. A plate chiller, where you send the wort through it in one direction and the chill water in the other. All of these will chill the wort form boiling temps to pitching temps fast. Some are faster than others, though, depending on your batch size, chiller size, chill water temp, etc.
I started with using IC's for my batches. Then I got a plate chiller, which did a much better/faster job. I now have a larger plate chiller that I use. Less work, faster chill times, is a big win in my book. Plus, you don't need to carry a pot of boiling hot wort anywhere.