I'm getting tuned by Stratified right now. I'm on revision 2 at the moment.
I've run the snap crackle pop tune with a HFC and now with no cat. With the HFC it's definitely loud, but acceptable imho.
Revision 1 of my flash tune came with the snap crackle pop. It's seriously loud, but you can drive stealth by starting out in 1st off the line and going one gear higher than you're suppose to. Also another note with the snap crackle tune. It makes your exhaust note uneven and louder (even at idle).
For Revision 2, I had Alex remove the snap crackle pop tune. I like to have it sometimes, but not all the time. I asked him to make a separate file on the final tune, one for regular driving and one for snap crackle.
The choice is yours, but giving you my experience from someone who has run their flash tunes with the snap crackle pop with HFC and now with no cat with snap crackle pop.