Exhaust configuratin has as much to do with sound, as muffler selection does. A long tube set up, with off-road H-Pipe is going to make a particular sound of mufflers sound completely different than say a short tube version with an X-pipe. Pipe length, diameter, etc will also affect sound as does adding or removing cats. Let's not also forget how engine displacemetn and intake configuration affects exhaust note as well. So picking one muffler and making blanketed claims based on the way it sounds on "your" car is really meaningless for the next guy, unless he's running the exact same combination.
Many here talk how the Magnaflow's are drone free. I had 3 (yes 3) Magnaflow muffers and 2-high flow cats on my last car and it droned along as bad as any chambered muffler set up I've run.
If you want a completely "drone free" set up, you should probably stick with stock, or keep the exhaust diameter small and keep the cats in place. I've here the Dynomax VT's and old Turbo's are about as close to quiet as you're ever going to come, but I have no practical experience with either. And again...configuration is going to be a deciding factor as well.