HKS Super Dragger Exhaust????

Does anyone have a super dragger exhaust, i was thinking about getting one but ive never talked to anyone that has one. I was also looking at the 5 Zigen Fireball, but i heard that they are more geared for turboed cars. I also really like the GReddy Evo. Which one should i get, and which one would increase my performance the greatest???
Thanks

I am no expert, but i have read much about exhaust on teggys. I would say your best bet is the Greddy EVO. I would check around first though.

ian