4 into 1 kerker or Deukevic

anyone have experience between these two ,,, witch sounds beter
/same ?     Im leaning to the Deukvic , ;;;stainless steel ;;;

As for sound, both systems sound good.

I bought a Kerker for my kz650 back in the '80s.
Street baffle.
It was too quiet. 
I had a Yosh pipe with no baffle before that.
The Kerker did get louder over 30 years.

A few years ago the Kerker rusted out, I bought a Delkevic exhaust with the straight muffler.

nice ;;; I have an original kerker [small badge] that needs rechroming ;;;;  but i like the stainless  ;;; no rust ;;;lol      so how doses the delkvec sound ;;;; i run open headers ;;;;

  Here's a video:

Can't open it.
Steve