[herio]

I consider both licenses to be about freedom however they differ in the freedom involved.

MIT style licenses are about freedom for the programmer to do as they want, not code freedom. GPL is all about the freedom of the code, at the cost of freedom for the programmer to do as they want.

I've gone the same route myself, from BSD style on earlier things to GPL on most things I do now. I'm still looking for a good license to apply to hardware projects though.