Have a 2010 X6 35i which I recently purchased CPO from my BMW dealership in MD. Got them to throw in a discounted Dinan Stage 1 Performance software at the time of sale and car runs great...good gas mileage. However I am now wondering about options for exhausts upgrades. Prior e92 M3 had an Eissenman Sport which I loved...and know the X6M has probably tons of options out there...but what about the non-M X6's in the 35i and 50i engine variants?
Opinions? Links? Thoughts? All would be greatly appreciated as well as any other must do mods for the car. Have clear side markers waiting to be installed when I get home again.

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'23 BMW M2 (Z. Blue/black) - weekender, '22 BMW M4 Comp (SSG/Black) - gone, '16 BMW M4 (Shakir Orange/Black) - gone, '15 BMW M3 (Black/Black) - gone not forgotten,'10 BMW X5M (Black/Black) - gone not forgotten,'08 BMW M3 (Space Gray/Black) - gone, '03 BMW M3 (Black/Black)