I've used, Simple Green, 1Z Plastikreiniger, the Maintex Bklynrx7 talks about, Megs QID. What I have found is that, it just all depends what strength of APC you want. The 1Z stuff is expensive, it works well but I can do just as well with the Maintex diluted or Simple Green. Now If you're dealing with something very dirty that you need to use a harsher degreaser, you can always rinse it with a damp towel and, what I've done is, follow that up with Megs QID. I don't think you need to spend an inordinate amount of money on interior cleaners. It is pretty standard stuff, plastics, carpets etc... I don't dress my interiors because I don't feel it's necessary. I use 303 AP for exterior trim like wiper arms, running boards etc... I don't consider Megs QID to be a dressing really so much as it's is an extremely weak cleaner, thats why I said you can always rinse the harsher stuff and follow up with that if you're worried. I will say the 1Z is a very nice product and a little bit has gone a long way but is it worth it's price tag when you can pick up the Maintex Orange stuff at Home Depot for about $4 - $5 for 2 bottles and use it on all sorts of things?