Definitely no annoying or nasty drone inside the cabin. Best of both worlds....raspy and throaty when you want it, and quiet when you want it. I agree that the size of the tips can and should be a bit wider. Other than that, well worth the upgrade IMO. I am an OEM-type of guy, so I am willing to pay a bit more for OEM BMW upgrades.
'09 e90 AW 335i M-sport
BMW PPK 1 / BMW Perf. Exhaust and Gloss black grilles / 19" BMW 313 Perf. wheels / BMW Perf. aero side skirts and rear diffuser