I myself like a mellow/mildly aggressive sounding exhaust. I can like a loud sound now and then but not if its my daily driver. Heres some videos I got.
Exterior
Revs:
http://www.youtube.com/watch?v=WXuVgBGVpVQ
Fly-Bys:
http://www.youtube.com/watch?v=DPAlGVTbmEQ
A little of both above, 6500 miles:
http://www.youtube.com/watch?v=8Y2a7V0K4ZQ
In Tunnel:
http://www.youtube.com/watch?v=EaQIOGG6G54
Burnout:
http://www.youtube.com/watch?v=eK2G3_MY1nA
And for kicks, open pre-cats:
http://www.youtube.com/watch?v=mqBxXkCl5aY
Interior
Average Driving:
http://www.youtube.com/watch?v=RItn83INXMM
Another but 6,000 miles later:
http://www.youtube.com/watch?v=NHs-nROThUs
If anyone cares to hear a real nice exhaust, have a listen to my old truck. A 2005 Chevy Silverado 2500HD Crewcab with the 6.0L LQ4. I really enjoyed the sound it gave, but I didn't like the economy 2500HDs get, nor do I really like driving a Chevy truck, but boy what a amazing sound. I wish my F150 sounded like this outside, but not as annoyingly loud inside.
3" true duals H piped
Magnaflow Hi-Flow cats
Flowmaster Super 44s
Magnaflow 4"x12" side swept tips.
Exterior
http://www.youtube.com/watch?v=hSWXrHGX8Lk
Interior
http://www.youtube.com/watch?v=ACqPGCJz29I
Horrid drone!