Honestly, I'd stick with the regular super, or maybe even go for the original rs3m2020 if moyu doesn't discontinue it.
I don't really see the purpose of the ball core version, considering it's going to be heavier than what is deemed reasonable on the market, Furthermore, at the end of the day, the base model of the cube doesn't change, only the number and placement of the magnets, to which none of them are really adjustable. for $20, I'd just get the wrm2021 or the tianma enhanced, because at that price, you aren't going to compromise on the actual mechanism itself. Sure, you won't get maglev or core magnets, but that's not really stuff you look for in a budget cube, anyway.
Snake-in:
Exciting to see YuSheng starting his own sub-brand! I wonder how he's going to tackle the cube market with his knowledge of speedcubing and design.