N1 vs Racing Medalion

I'm having troubles deciding between the two. So it would be great if you guys could help me out. The most important factor is the gains, and secondary would be the sound. Let me know what you guys think. Thanks.

i like the profile of the N1 better... the tip sticks out instead of the whole canister

Both exhausts are pretty loud in comparison. The gains for both are similar. I'd go for the N1; the tip extends out as mentioned by drift, whereas the tanabe RM is just a big muffler jutting out of the back.

There actually isn't much comparison between the two... the N1 is much better in every aspect... The N1 and the HKS Hiper are two of the best exhaust systems on the dyno. Although, I do like the sound of the Tanabe's.