m20 vs m21 on silver

[Robscoe]

So the 2007 silver a4 clearly had some amateur paint correction form before i got
it. Just wondering shine wise which is better for my car. Also it rains a lot here. Been using the wash and wax which provides good results just not sure what to top
it with. ps i did a m110+210 Combo and loved it njst
unsure what to finalize it with. In the inserted
photo i’ve just topped with the turtle ice seal and shine but i’d like something more long term if possible. Thanks


Imgur: The magic of the Internet (https://imgur.com/a/fkzNwNF)
https://imgur.com/a/fkzNwNF

[dlc95]

You might not be able to tell the difference between the two.

M20 was nice because it has a pretty good amount of chemical cleaners in it, where M21 likes to be on a good or polished finish.

I would typically reach for M21, but M20 was what I normally used back in the 90's.

Also, from what I understand, Meguiar's has discontinued M20. There is still so much out there that you should be able to find it, but for those that really loved it, they may want to stock up.

[The Guz]

M21 looks great on silver. If you are after longevity a coating is the way to go. But that TW product would need to be polished off.