I switched to Pentax because of the smaller weather sealed body available. I still have a very good Canon body and lens that I think about selling every other month. But I never pick up my Canon. For carrying around all day I enjoy the Pentax. If I were to start all over I would have bought the Pentax to start. The most important thing I know now is to look at the lenses you want, which of course you don't know what lenses you will want or need when you start. If you buy good glass, you might use it the rest of your life while you trade in your camera body whenever you feel the need for the newest, latest version. Good glass also seems to hold its value better if you decide you do want to switch systems.