Kirk wrote a long post about it a little ways back. Let me see if I can find it.Maybe I missed it, but did Kirk (or anyone else) compare the two bridges yet?? (Hipshot vs. the new AC "Vintage" bridge).
I'd love to know what the differences- might make the switch.....
EDIT: Here it is!
http://www.talkbass.com/forum/showpost.php?p=5676127&postcount=210

...........it does have a very funky, "transition-y" vibe to it..........I likes.........