Zirri silent or Simonini

Need to buy an exhaust for my et3 (1st stage of tune up). My question is : Which offers best spread of power - is it the Zirri silent or the Simonini down & under ?

Cylinders- Polini or Malossi ?[:’(]

I’ll reply to myself then -:

Hey Me why don’t you go for the Zirri Silent as I haven’t got one yet and ist a lot better than the Simonini.