Nismo zorst is awesome and nothing like stock or scorpion in my opinion, yes it's a status thing along with every other Nismo product.
Personally I think a true dual exhaust is the best. I can supply exhausts from £374 - £ 3500. It's all about personal preference. HKS true dual
I can't wait for you guys to see the website, I have not even touched 1% of the products that I can supply on here due to the fact I've been so busy, however , I don't think there's an American/jap manufactured exhaust part that is available that I can't save you money on