hey
Just wanted to add that the foliage composition is more interesting now because it's not as a regular pattern and it differs in shape and size. I don't know what you are aiming but I really think you should decide on an overall style before continuing any further.
I think both the trees work, but you can't compare the old one to the new one in matters of better/worse when it is a matter of style.
So if you made the simplistic tree with the same unregular pattern as the more detailed one, I can't see why any of them would be better, or worse.
Another thing that hit me, that actually looks better than the other, was the colours of the new tree.
GL!
//coffee