Dear dgarretson: I owned that SME 3012 too and really like me, maybe because its big name SME. I own/owned the 1V/V too but I never did a comparisons against the 3012 because this one was sold.
In theory the 4Point by Kuzma is a very good tonearm and maybe your preference for the 3012 was/could be because the cartridge used on that comparison made it a better match with the SME and not because is 12".
HW, Helius and me were talking of comparisons made it with same cartridges with same manufacturer tonearm models: one 12"+ against same shorter tonearm model. This way exist only one diferent parameter under evaluation.
As I said opinions coming for other respectable Agoners like you always helps in any audio item dialogue.
Regards and enjoy the music,
R.