It would be good if you did post up your info on the different systems you went through, as forum members will get to look at your results and make an informed decision when it comes time to buy a system for themselves - as this is what a forum is all about imo
Thats cool but everyone has their own idea of what sounds good so my opinion is subjective.
Also, I can't remember all the full systems I tried at the moment. They were all mid to low end systems. I have'nt yet tried the top end ones like Pacemaker or Manta. On my manual SIDI, "ALL" the 2.5" systems I tried droned at start-up and at about 105ish kph, top gear, light to full load. The best after market system I tried was the 2.25" X-Force mild steel system ( also the cheapest ) but this also droned a bit under the same conditions. On a side note, IMO the mild steel systems sound much better than the stainless ones. The only stainless 2.5"one that sounded half decent was the Mr.Muffler one but it was pretty bloody loud.
As for the rear mufflers ( factory SIDI front & mid sections ) I've tried.....
Stainless steel evilebay ones = pretty loud & droned.
RedBack = a bit louder than Berkley but still caused drone.
Berkley = quietest of the after market ones but still droned.
Walker = horrible tinny sound. Pretty quiet but :spew:
Can't remember what the other brand was but it was straight through style and sounded like a hotdog.
I doubt that helps anyone but that's my 2 cents.
Will take some pics soon of what I have now and post them up as that might be helpfull.