I'll see if we can get the 2 not ultimately chosen added to the custom banner page that members have access to. When managing your preferences, you'll see DG Picture in the list of options in the column at the side of the page. I don't see why we couldn't include them there...they're all so nice. A little hint, the image you choose from that list will be your Home Page image.
I ask my vote not be counted but I think #2 also it shows up the best, is crisp, and cool #1 is more arty looking which is also very nice but not quite as distinctive... but all are very nice as banners flip a three sided coin ;>)