3 350z and a 370z? Dang...you don't keep cars long.
260 vs 285 yes, 25hp. But 260 for a HR is the lowest I have seen also. There was another comparison on a dynopack I believe and it was only a 15 hp difference between the HR and the 370z.
The 370z is a improved car, some things aren't as good as the 350z and some things are better. To improve you have to give or take sometimes.
I bought my NISMO for a track car / daily driver and it has done well. It is the only 350z that still out performs the 370z in handling numbers however. But look what they had to do to it to make that happen. The 370z the way it is already does a lot better than the regular 350z!
I like how some of the underbody reinforcements under the back end of the 370z are. Man that is some serious metal under it.