The new G35 are nice, like real nice. Depeding on how much you get go get an M3. If your like me and only buy new then it might be pricey, either way, G35 is a nice way to go. I've still yet to race a G35, i need too though.
The interior of the SE-R is seriously the best interior you can get stock, so clean. My car is Smoke, so i have the graphite leather with like a greyish white piping, went and got custom, it sets it off perfect. The 18's are tight too, once summer hits out here im goi nto get some 19's Chrome though, probably 7 spoke, something a little different, should be nice. The only thing that is trouble for me to get that the SE-R has i do not is the illllll Grill, it looks so tight. I can get some aftermarket ones but the shape is key, not like mine is ugly though. Sucks about your Maxima, i read in here you rolled it 7 times or something, good thing your ok. Peace.
Edit: Being your a Nissan enthusiast, do you know any good sites for performance parts, im sure they will be all over in a minute but as of now i can't find shit cus the car is so new, let me know if you do.