get the greddy evo, it has a low deep sound. i think it sounds great. installing it is very easy too, its just bolts. if you have some socket wrenches with 13, 14, 15 mm you should be fine. get a buddy or two and im sure you guys u can install it yourselves.

 

I have Tanabe RM and compliments on sound from everyone. Everyone wit the RM cat-back i kno sounds good also. Everyone talks about N1 sounding good but every N1 i heard sounded ****y, but i haven't heard it on enough cars yet so thats just my opinion. I had Fireball for 1 day, not very loud but looks better than RM but is a smaller muffler too. Just my point of view. Its up to you, im sure everyone has different tastes.