E46 M3 back box

[2skiddy]

Hi, Looking into a back exhaust box for my E46 M3. I was wanting to lose some weight for trackdays by fitting an aftermarket one. I know the factory exhaust is very heavy, but I appreciate it is quiet for my trackday noise limits. Is there a box out there among the various offerings that will only give me a slight to modest increase in noise as well as reducing the weight? Am I asking the impossible or is it even worth it? I don`t want a noisy droning job, as it will not impress my good neighbours at 5AM, or the trackday organisers! Presently the car gets into the 88 dB club, and I would like to keep it that way if possible.
Your tales of experience please.

[clabcon]

Eisenmann Sports exhaust (not Race)

[Jonboy_t]

No experience per se, but I hear Miltek are very good and the sound doesn't necessarily increase, just changes pitch and grunt. There are a few vids on youtube that show the standard and Miltek's next to one another.