From what I’ve seen, the 12 series is really hard to find a good setup for. Nobody has seemed to find one that fits them yet.
Cubehead and Tingman both did a comparison between all of the cubes in the 11 line (Air, M, Duo, Pro), and I think that they both concluded that the Air and Pro were not worth their respective prices, and that you get the best bang for your buck with the M or the Duo. They also both said, though, that if you have the money for the Pro and want the great customization features, definitely get it.
If you’re thinking about switching mains, though, I don’t think it’s really necessary unless you really hate the feeling of the WRM 2021. I’ve been using my Tengyun v2 for well over a year now, and I still love it. There’s also people like
@Sub1Hour who have mained a cube for an even longer time. (In his case, he’s mained the Valk for 3-4 years, I think.)