Kamispeed (a forum sponser) has great service and fast delivery and Z1 Motorsports also is very good.

Honda is a fun car it has some feel you won't get in a z and vice versa
Pretty sure you won't be disappointed if or when you make the jump
Good luck!

Conrgatz and welcome. To be honest the Nismo in general is rare. I have owned my Nismo for about 4 years now and since I have had it I have seen only a hand full of Nismo in the area that I live. I have seen more GTR's around then Nismos lol. Though out of the ones that I have seen two where black and the other one was white. I think the black one I saw might have been the same person twice. I have never seen a red one in person.