Extremely well done. Looks like a work of art. It's a pity to hit him with a welding machine. I chose this instead of the ultra-quiet model. I was concerned that the UQ might not deliver the aggressive sound I wanted. It's definitely aggressive under load or at high revs. Sounds awesome, but you're paying the price for a drone. Maybe in time I will replace it with the UQ model. It has a moderate hum, but much better than cheap resonators. The volume in the cabin is a bit loud for me, but after that my car is straight and has an oversized Y-pipe. I have this on a 2005 Infiniti G35 with 6 speed RWD just behind the Y pipe. The tone is excellent, with occasional deep pops after high revs and reset. Very depressed. I'm just all the way back from this one. Deep sound at idle but it screams at 5000rpm. Nice but loud. My own exhaust workshop was impressed by this. Very happy with it, but if you want a smaller drone and don't mind sacrificing aggressiveness, go for the ultra-quiet.