Just curious. What value do you see in Y12, other than it is not as expensive as Y37 or Y67.
I have in mind a surname project in which at Y12, there are literally hundreds almost a thousand matches, and the matches are all over the geographical map, literally, Russians, Poles,Scandinavians, Arabs, Iranians, Anglo's (America and Europe) but mostly Russians and East Europeans. When narrowed down to Y25, there are roughly 70 matches with men who share a paternal ancestor about 800 years before the present. in , apparently, northern England.. At Y12 the haplogroup is R-M512 or R1a1a
I realize that different haplogroups have different results but hg R1b1a is the Western Atlantic Modal and at Y12 there are going to be 1,000 or more matches, virtually all Western European.
Point is that Y12, for genealogical purposes, is useless, maybe of some value for deep ancestry., but certainly not for relatively recent ancestry or genealogical purposes.
Then again, this is merely my opinion, based on the results of one YDNA surname project..