All the rand~ objects may be unnecessary...

I was having similar inconsistencies by running a pink~ object with a similar envelope through a lowpass filter.

Yeah, lose the [rand~] objects. They are conflicting with the noise. Secondly, the domain for the function is only 5ms--too short for a drum type of sound. Try lengthening the domain and increasing the rate of the attack and see where you end up.

Thanks for the reply--will do!

I've still been having issues with all the different sounds that I've been experimenting with.. Subtly Inconsistent. Here's my latest attempt. Any help is appreciated!