Baffled?!?

[dan944]

Right then guys. Some unbiased opinions are needed here. I recently had this made


Which sounds a bit like a spitfire if you've seen the video. But I like the raw, raspy noise. What I don't like us the volume. Especially as I have just bought a high flow cat which I think (correct me if I'm wrong) will only make things louder and I'm possibly losing too much back pressure (once again may be making things up) so I want a lightweight baffle to reduce the noise. Have bought a cheapo decibel killer for now just to stop me from getting the wrong kind of attention but what I need to know is which box should I get?
 m http://bit.ly/1pNoxUN m
2.3 kg £60 250mm lg x 125mm dia
Or
 m http://bit.ly/1ecfFkE m
1.9kg £122 508mm lg x 102mm dia

Or do ou know of any other options. Keeping costs down preferably haha.
Any help is much appreciated  s:) s:)

[dan944]

Just to add on to this. Are there any exhaust ninjas out there go could give me an educated guess to which one is likely to be quieter.
The light weight ally one is twice the length (better sound absorbtion?) but thin aluminium walled possibly making it louder.

Whereas the jetex one is half the length but quick robust steel ,possibly making it better at containing the noise?

Either way both would be wrapped in ceramic exhaust wrap.

Help please :s