1) I agree with tirediron you look tense in all the photos currently in the OP.
2) They are all way too dim/dark right now, easy to fix.
3) #4 I think you looks the LEAST tense.
4) The smile with teeth one #3 looks really forced in particular.
5) All of the above being said, they all look sufficiently professional. And you're a very attractive person, it's probably hard to take a bad photo of you, and any of these photos will probably increase business. So whatever! Take a majority opinion or flip a coin and don't worry bout it.
Edit: Oh also, ditch the double catchlights in your eye.