As mentioned above if you want the rumble UEL is the way to go and personally if you don't want to be loud get a header with a cat in it and opt for a cat or resonator wherever possible. I have the Greddy Evo GT cat back with the JDL 3" over / front pipe with a cat and resonator and the JDL UEL with cat and it is very deep and has a great rumble. However even though it has the two cats and the resonator in the front pipe it can be pretty loud on throttle. A lot depends if you are going to replace the front and over pipe too cause that can greatly add to sound level. I would recommend the JDL catted UEL for the rumble and the corsa cat back or greddy supreme SP for a more deep and quiet exhaust when coupled to a header. but as always loudness is relative and changes from person to person. Here is a link to a short clip of my car so you can hear what my combination sounds like.
https://photos.google.com/share/AF1Q...1ULUdEVXVGRk1B