maaaaan the first one is the most dull and boring one, and it' gonna win (btw I have to say I expected more overall...)
I like #4 as it shows a variety of art (and the Corgi is quite pleased). That said #1 is amazing and I'd love to see that more often or as a desktop background.
Dat Deep Elf in the first image has got herself some nice, wide, birthing hips. I feel them hips would be too distracting, so I'm gonna go with #3. Gators are always cool.
Although we may not have a lot of people on at any one time, we have lots of people that visit to keep upto date.