Milltek res & non res

Hi please can I have done opinions on both of these please as I'm getting one and am unsure which is better.any help is gratefully received.currently have standard set up but think it's been de carted as there is a flat spot. Thanks
 
A few days ago I installed Milltek cat back system not resonated with de-cat. Ofcourse there was a flat spot - so it is necessary to remap. Not resonated is quite loud - probably next time i would choose resonated version :wink:
 
Yeah non res is very loud on the scorpion system so I changed to the resonated pipe. Very hard to map out the flat spot completely on a non res. also the res sounds the same just not as loud at irrelevant times (2k etc)