I've always felt there should be a direct relationship between how loud a car is and how powerful it is. There are plenty of cars in my neighborhood with coffee can mufflers and otherwise stock engines. A loud, boomy Honda Accord is definitely NOT cool, or "kewwll" as our disgruntled friend would say. Certainly having a loud but slow car might be amusing for a day or two, but it gets old quickly.
The reason that Boss 302 sounds cool is not because it's loud, but because you can tell from the quality of the sound that it is powerful. Notice I said quality and not quantity.
Now, I'm no engineer, but I have been wrenching on sports and race cars for over twenty-four years. Perhaps Kitabel knows more about this than I do, but from what I know about cams, a lumpy idle doesn't necissarily mean your car is "strangling on the excess exhaust gas in the chamber and straining to produce enough power from the low cylinder pressure to prevent stalling" Allow me to quote from the Classic Inlines web page (it was convenient)
"The lobe center controls where the power curve is applied. This cam with a 112* lobe center will come on around 3500 RPM (not to be confused with the power curve - which happens to be the same RPM). Changing the lobe center to 110* will lower the point where the cam starts working (kicks in) to about 3000 RPM. And changing it to 108* will lower it to approximately 2500 RPM.
Therefore, this cam with a 112* lobe center will perform best from 3500 RPM to 7000 RPM. Most of our sixes will never see 7000 RPM, so in my opinion it is too much. The same cam with a 110* lobe center, will perform best from 3000 RPM to 6500 RPM, which is where most prefer. The cam with a 108* lobe center, will perform best from 2500 RPM to 6000 RPM, which is great for a mild street racer.
But keep in mind, a cam with a 112 lobe center will idle better than one with a 110* lobe center. And a 110* better than one with 108* lobe centers. A 112* will give a smooth idle, 110* will be a bit lopey, and 108* will be choppy. The 108* cam is fine with a manual tranny, but an automatic may require a matched stall converter (2400-2500 RPM stall) for ultimate performance."
So yes, lumpy is decidedly a PITA for a daily driver, especially with an automatic. However, I stand by my statement that if what you want is a mean sounding six (notice I didn't say loud) that actually has some muscle to back up the sound, then a lumpy cam ( and high compression) might be a good choice for you.