I didn't do any processing on this one.Colors would come out really well in this shot! Did you try to reduce the exposure a little in post, and also bump up the saturation a wee bit?
Too much manipulation in post, often makes the photos look artificial. But for this one, I just felt, a wee bit contrast and saturation would really bring out the beautiful autumn colors. Something like this (I know looks terrible around the edges, but if you try this with the RAW files it would turn out much better) -I didn't do any processing on this one.
I shot about 22 images hand-held and merged them to get equivalent long exposure and posted it as it is.