Don't do it, waste of money. I'd wait till the complete remodel to even consider a trade.

I just traded my 2005 g35x for a 08 g35x-s w/nav/tech package,I was planning on leasing a new g37x, honestly I like the 08"s better, the new motor sounds thrashy to me and the new 7sp tranny is not my fave either. I don"t know what the numbers are but the 08 feels just as fast as the 328hp model.

^I have an '08. IMHO, the 37 is superior as far as power/acceleration and I found it less harsh than the 35.

I liked the upshifts on the 7 speed but the downshifts were very aggressive and clunky.

I love the 2010. They look lot more classier, better mpg. faster a bit.

I think many of the comments are all on the same line as the sales guy I spoke to. He said that many feel Infiniti is trying to tame the beast with the G37's. They are more refined and luxury focused. He said the G35's are beasts in that they are more geared toward people who like driving. Don't know how true all of this is as I never td a G37.