I like 4 and 5 the best. I wonder if you could raise the brightness a touch, push them towards yellow, and maybe raise the saturation a hair. That would make it look sunnier. It looks like you shot these on a cloudy day.
Also, with 5, I'd like to see it with smaller aperture, so the whole butterfly is in focus. I mean, I like it as it is, but I would aslo like to compare the two if you had it the other way.