66g version Phenom?


There doesnt seem to be a review yet for those new more than 2 years old phenoms with reduced weight of 66g.
Is there any significant difference in play compared to the original 70g version? Im more concerned with the spin time than anything else, since when I played the 70g I already thought it did not spin quite as strong as for example a YYR. Also has the weight distribution been revised somehow? The weight rings appear slightly wider to my naked eyes, but iirc these still have full sized hub nipples unlike the titanium version.