I'm in a little bit of a middle ground between the 2 of these. I'm looking for a product that can do engines, jambs, wheel and wheel wells, De-bug and possibly dilute enough for interiors as well. I see capabilities in both of these products but don't know exactly which one o go with. The 108 seems to be a lot stronger and works faster, but I'm worried about possible negative effects this would have on parts if the vehicle it might get on as far as overspray. The APC+ has awesome reviews but i'm wondering if its gonna gonna be strong enough for those nasty vehicles. I'm in Michigan so we get a very diverse type of cars/trucks that come in. Some are FILTHY and grimy, and others need a standard cleaning. Please help me out guys! Thanks for your reviews. This is a branch off of another thread that you all have been very helpful with!