What is the main reason to go with one over the other? (I am getting rid of the DPF) Is it mainly a money thing, or better performance, or preference?

usually the reason for going w/ the PPE is b/c of the high power levels. i would say if you're not looking into upgrading the the trans anytime soon, go with the Quadzilla. you can even run that on stock power w/a dpf delete. not to mention it's a fraction of the price.

definately not interested in tranny work. I had tranny problems on my LLY and I dont want to go down that road again.

then quadzilla it is. can't go wrong w/ a $450 tuner that gives you 7 power levels and deletes the DPF imo.

definately not interested in tranny work. I had tranny problems on my LLY and I dont want to go down that road again.
I have a used 1 for sale if you are interested shoot me a pm.

Maybe I'm just special, but I get better fuel economy with the PPE...