Actually for the 2012 models both the Z06 and ZR1 have faster ring times...and that's more relevent than 0-60. GTR also looks like schitt next to a vette
Yeah, I know...Zr-1 is 7:18 something, and both have revised interiors. better times due to better tires.
The LFA had a hot lap of 7:22, but will do an official lap sometime later.
The GT_R looks may not be for everybody's taste, but for the money---it slays Ferraris, Lambo, Porsche's, Vettes, etc. it was made for a certain pupose...but if it was my money it would be the ZR-1