I haven't heard another bandit with another pipe so I have nothing to compare it to... but I do have my opinions...
I don't really think it's all that loud until you really get on it. WOT and there going to hear you coming 3 blocks away if not more.
Cruising, it's not all that loud unless you try and pass somebody. While cruising you can hear the pipe but it's not the eardrum bursting sound you'd think you hear.
Around my little college town there are tons bikes most of which are 600's. More then half of them have some aftermarket pipe or another but none of them have the deep sound that comes from the D&D/Bandit. It can be loud but mainly it's a deep rumble compared to the others that sound like your shaking a coke can with marbles in it at super-sonic speed.
If you want me to I can try to take some recordings with my camera... the sound should work... it might give you a better idea. Just let me know.
Chad
BTW... I'm sure my neighbers would prefere me to put the stock pipe back on... I have an 8'o clock class that I sometimes ride the bike too... using the choke... it's not incredibly quiet...