well number two looks most natural as the eye sees it, number 1 less so, number 3 in between, but none are too garrish, I guess with HDR it depends what one wants to project, of course this is coming from one who has never tried it, and what program did you use?
|Nowhere by Nanard 92|
from The Illusion of Depth and Distance
|Green Tomato by lim yau tong|
from Growing Fruit