I started with a Sony Cybershot as it is VERY BASIC AND CHEAP.
Then, I moved on to others like the Canon Legria HF 200, Nikon DSLR D90, Sony Handycam from the PJ series (with projector), besides some occasional filming with my phone or tablet for some informal stuff. I’ve been starting to use the GoPro 3 Black as well, which is very practical. But I do not recommend being too concerned with cameras: any will do.
My tip: instead of being too concerned about cameras (which are always changing), the important thing is that you have a professional sound. Invest in a good microphone.