Buja, I have used Cockpit Premium many times to remove scuff marks and it has worked quite well. Then again, I have the Plastic Reiniger now and it's better. But CP will do a fine job as well. Personally, I like using it because it smells so damn good!
Just got my CP and it seems to be good (not adding shine or oily almost transparent), will see if it'll become my go to since my Plexus plastic treatment is getting low. I think CP is way cheaper than Plexus aeresol
Einszett leather care contains silicone and beeswax, it's great for old school leather but not new (IMHO)
I just got the CP the other day, as well as the gummi-pflege and glas polish. gotta order more hartglanz soon. gonna try some other 1z stuff in the future as well. they are becoming one of my all time favourite product lines. they make a lot of stuff, more than most retailers carry here in the U.S.
If you have not ordered it yet here is my take... I used used it for the first time last weekend and I dont see the hype about IZ Cockpit Premium, they are better cleaning agents IMO but it sure does leave a nice citrus smell.
just spray and wipe with on MF on just about anything plastic in the interior. I will add that i used IZ CP on an interior that was not taken care of... well at all, so in many places i had to use a APC. I will most likely continue to use it possibly a follow up to an APC to leave a nice matte finish and oh did i mention the smell... i like!
In my experience, CP has some light cleaning ability. It's more of a protectant/looks product than a cleaner. For heavier soiled areas, such as the plastic trim where you get into the car at bottom of the door, I use 1Z Plastic + Vinyl Cleaner. It has more intense cleaning action in it. Spray some one, wipe with MF, adn it shold make a noticeable difference.