The Meisterschaft full cat-back exhaust has more of an exotic sound than the Motordyne Exhaust in my opinion. I like the way the Motordyne sounds, but I would go with Meisterschaft. I will have to redo the videos. I have one that is good which starts from a cold start & I am reviving it up, but not excessively. Having me do a drive by is a little hard on my end. I may only be able to have one video unfortunately.
Here are three videos that give a pretty good & solid idea of what to expect from the Meisterschaft full cat-back exhaust. The first video is more spirited driving while the other two videos are just cold start & reviving up the car. If you were to look at the Nissan GTR with the Meisterschaft full cat-back exhaust that is another good example. The 370/Nismo Meisterschaft full cat-back exhaust would be a little louder that the GTR, but not by much from what I understand.
Meisterschaft 370Z and G37 Exhaust by GTHAUS - YouTube
Meisterschaft exhaust for Nissan 370Z available at www.umbrellaautodesign.com - YouTube
GTHAUS Meisterschaft GTS Nissan 370Z exhaust sound - YouTube