Should I go with a helix (around $650) or Stromung(around $1k) TBE? Is there more improvement in hp for stromung? Any helix sound/vid clips?

I've had a stromung in my sentra and loved it, but I like the price of the helix.. I also got a helix uppipe sitting in my room, will stromung fit it close to perfect?

And I like the boxer engine sound and dual tip, so im up to suggestions.

 

The upipe is before the turbo and the downpipe and the rest of the TBE is after so you dont need to worry about the two fitting together. Here is a link that shows the WRX exhaust https://www.i-club.com/forums/attach...chmentid=26009. I havent had either of those TBE's but I have heard good things about both. The 3" Stromung DP has a divorced wastegate so if you plan on upgradeing the turbo in the future (from what I've read some turbos wont work with the stromung) you may want to go with that instead of the Helix.