I like everyone's concepts, but I want to point you in perhaps an even better direction. Here are links to some of the biggest companies we compete against. These are major creative advertising agencies. Take a look at the simplicity of their logo concepts.
http://www.wk.com/http://www.bbdo.com/#!/the-work
http://www.casa.ag/http://www.razorfish.com/http://www.bigspaceship.com/http://www.sapientnitro.com/en-us.html#homehttp://tbwa.com/http://droga5.com/http://saatchi.com/en-us/http://www.epsilon.com/