@chakster
I understand your preference for authentic items. Earlier in the year, I was able to score a NOS ATN15ss stylus for my AT15sa cart. Wow! What a detailed little beauty! Just afterwards, I found a 1978 AT ad brochure that detailed the stylus/cantilever improvements. Of course, AT encouraged everyone to take advantage of their suggestion. :-) IIRC, my AT15sa cart is an earlier model with 370 mh inductance, unlike the later 450 mh models. Nonetheless, it ranks a very close second tier to my Signet TKs and AT 25.
@ateal
Congrats on the Tk10 acquisition. I will be interested to read your opinion of it. I have one TK9lca, the rest have ATN25 stylii. So, far, I have not been able to hear a great difference between them. Of course, the super-small 2x7 stone will not last as long as a microline, but that's why I've been stockpiling stylii. Personally, I'd rather have a factory replacement than a sleeved and super-glued after market fix.
On a tangental note, I have fallen in love with Beryllium cantilever stylii. Besides the ATN23a, and ATN 25, the AT15ss and AT155lc deliver such an open soundstage, as does an AT9v. I'm listening to "LA 4 Scores!" as I type. Might as well be in the club with them:-)
I digress. L'Chaim to all.