It's gotta look real sexy.

There is no answer to your question as it is dependent on a million different variables. It's why they cost a lot of money to do.

I was thinking more like design oriented..

a vague answer for a vague question: should be legible, should be recognizable, should have the ability to be shrunk to really small sizes, or at least have a version that is tiny, should communicate the vibe of whatever it is that you're doing.

Yahoo always has the best answer.

http://answers.yahoo.com/question/index?qid=20120322223124AAkRXDD

Ray just did a writeup on this topic like a month ago. http://www.lowdtown.com/blog/articles/2012/07/what-makes-a-good-clothing-brand-logo/

Thank you everybody for the help.