Helpful?
Its your choice mate, your asking people to decide for you. I dunno what you want, you want a little growl (i.e. not loud) and a small gain in power. Most any exhaust will do that.
Just find a system that fits your budget and looks like you want, but i dunno how faw your going to get as most offerings are plain round tips, IMO are better looking than oval and all that nonsense.
Supersprint are not cheap.............but at least some effort goes into R&D. Unlike others who just bang out systems that fit and twiddle with tailpipes.