Aurora40 said:
Medallion Premium Paint Cleaner by Meguiars is a nice rather gentle cleaner that you can use often. It is considered non-abrasive, but it has what Meg's calls micro-abrasives. "Abrasive" is one of those terms that has to be quantified. Even water is abrasive to some degree, so there has to be some limit of abrasiveness where things above are called abrasive, and things below are called non-abrasive. MPPC is considered non-abrasive, and it is mainly a chemical cleaner, but it does have some abrasion to it (as does anything). It might help with very minor swirls, but it isn't a replacement for a good swirl remover if that's what you need.
I've heard differently about MPPC.

I'd heard it was on the stronger side for a paint cleaner, and this is supported by the "unofficial Megs abrasiveness scale"(?) post. According to that, #9 swirl remover is actually the gentlest product. :nixweiss
I've come to almost totally ignore claims of "non-abrasive" because of the reasons Aurora40 mentioned. (I hate nitpicking, but I think Meguiar's considers it non-abrasive, while they actually contain micro-abrasives.

) Almost all cleaners, polishes, swirl removers, etc. have
some abrasive in them, but which product you choose depends on how much "fixing" the paint needs. Like Aurora said, there is no actual need to "clean" the paint twice a year, and people only use cleaners/polishes on their car when they want to start all over (for whatever reason) or just polish out the car because it's starting to show swirls.
Swirl removers are fairly mild, and even milder are paint cleaners like the ones from S100/P21S. But as with anything like this, don't use them unless needed. I can't remember if anyone got your Q from your other thread, but I wouldn't make using a cutting pad part of your regular routine. Its job is to enhance the abrasiveness of a product and help "cut" down the top of the paint when you're correcting more serious defects, so again it's okay to use it, just only use it when needed.