lug nut type and length

[rubixcube]

Hi all,

Just bought a new set of enkei J10s. Looking to get some new lug nuts - I know the pitch is 12x1.5 and I need so called 'tapered' lug nuts.
My question is, are the terms tapered/conical/acorn all interchangeable? Shopping around you see them all used for nuts that look the same to me.
I've seen this image

http://site.brandsport.com/exterior/wheels/acorn-mag-ball-seats.jpg

and as I understand, stock are on the right and aftermarket are on the left.

so would an example of so called 'tapered' nuts be these
http://www.ebay.com.au/itm/BUDDY-CLUB-BLACK-WHEEL-LUG-NUTS-12X1-5-SET-16-PCS-DC2-/160432708527?pt=AU_Car_Parts_Accessories&hash=item255a88dbaf
which is GOOD and what I need..

and ball ones are like this
http://t3technique.com/media/images/lugs/closed_end_nuts_lg.jpg
which is BAD

The difference is fairly subtle to me but I guess it would be far more noticeable if I were holding them in my hand. Am I just reading too much into things and pretty much all aftermarket lug nuts and wheels come as 60degree tapered? And one last thing...what length should I go for?

Thanks

[chargeR]

Pretty much all aftermarket wheel nuts aimed at Japanese car and wheel owners are 60° tapered. I think you would have to be extremely unlucky to accidently buy some that are ball seated, since they are unobtainium in the aftermarket.

Just get whatever length you think will look nice. I have awesome extended ones because all my wheels have epic concave.

[DLO01]

If you need tapered nuts then get tapered nuts. Do not used any other type. Get nuts to suit your wheels mating surface.

[rubixcube]

Cool thanks guys