It just ain't right to have to make a choice this month. So much greatness to choose from.
When there's an artful presentation I usually lean that way. When nature serves up something awesome, and there's not much that fits the "artsy" label (rare anymore) I'll go with the best of the natural awesomness.
Some of the nominated are really picking up the artsy level of the mushroom pics. There's no reason pics in tubs can't be awesome.
My vote? You'll have to guess.