I have booth the ppe and the edge stacked, i have also run the edge stacked on a trippledog, to much timming is the biggest issue. I run my PPE HOT 2 ON LEVEL SIX ans the edge hot on level 4 and this is the best settup i have found to work on my truck to date. As far as something to run around the streets with the edge is by far my fav, as the ppe can not be turnned up and down(or as far as i know) with out redownloading the diffrent settings. I would say play with it and see for yourself what works best on your truck because our three 07's run a little of everything and they all run nothing alike.