BMW R1200S Soundtrack

Well friends,

I'm looking for some decent (slip-on) soundtrack for my R1200S (power increase is meaningless without the front  pipe  assembly).  Is  HPE  any good? I'm not a big fan of Italian made stuff (quality) Has anyone tried other brands?

See:

https://eshop.t-online.de/epages/Store.sf/?ObjectPath=/Shops/Shop00527/Categories/%22R%201200%20S%22/%22R%201200%20S%20Auspuff%22