Has anyone fitted one of these ???

[Southwestz4]

Hi all
Has anyone on here fitted one of these back boxes ??
Was wondering what they sound like compared to stock.
I am looking for a sportier note to exhaust but not loud...budget is £400-£500 ish

Schmiedmann stainless steel sport rear silencer 2XØ76MMProduct number: SCMZ4E85R276

 

[Southwestz4]

If not, does anyone have a back box recommendation for around £400 ?