There is something to be said for the simplicity of Entry #1 but we need our tag lined to be incorporated into the design - "Your friends in the ticket biz" and we also would like to steer away from the "seat" graphic as we are an event ticket company and prefer ticket and/or fan hand graphics as descriptive elements of our brand.
For #16 - I don't like the italicized tag line but I do like what you did with the updates to the rest of the font size. The icon should not be a seat... it needs to be a ticket and I am ok with it included in the company name or to the right or left.