Rel Author-Me or my logo?

[KristopherWho]

Me or my logo?

[bradkrussell]

Most people use an image of themselves - remember the Author is you, not your company. Plus, Google has certain guidelines to getting your image published in SERPs, so you'll want to choose a good quality, personal photo.

[Andy.Drinkwater]

Brad hit the nail on the head there Kristopher. Whilst you are the author, it should always be you and the image should also match this.

However, the ideal scenario is to have rel publisher on the homepage and rel author on subsequent pages on the site.

More reading here

Andy

[TheeDigital]

It should always be a picture of you.  Take it from a social media point of view or even a cock-tail point of view as I tell my clients, your brand doesn't talk to clients you do, so you definitely want to put your face/picture out there.