I have the milltek, lovely sounding exhaust with a nice quality note.
However, spursmaddave showed me how to unleash the full potential and add some berks to it, and omg. The earlierposters are right the standard milltek is too quiet but with the berks its fantastic. Gives a really nice note under acceleration but when cruisingon the motorway its not intrusive at all.
The raspy note as 3.5-4 k revs is not for some but ivegot used to it and love it now. I bought the berks purely for the sound and its the best thing ive addedto the car.