I personally like them all, but especially like Withering Dream the best, because it is so different from what you normal find. I voted for Evening Dream, because the lone tree, green grass and blue sky has been done before, don't get me wrong, it is a fantastic image, but it's more commercial, which would probably be a better reason to keep it especially if you want to sell the calendar

I love them all, too. But imho "Withering Dream" is a little different and more interesting.