So... thank you for voting, people! The first look had the most votes, but I wasn't happy with the background. I don't know... it was just too 'orange' when I saw it put up. So I matched it with the background with the second look, and I really rather like it!
For memories sake, here's my good old summer one (which I was so fond of):
I also redid my sidebar with lots of autumn pictures... I hope you like it!