Moyu going to release new cubes soon is most likely a fact. They do not have any modern top performing cubes. I like my WRM Maglev, but the Pioneer series really took over the top spot - at same price levels. And the existings Moyus can't really compete.
It is great we see so much "innovation"/"evolution". And interesting to see how quickly modern cubes becomes dated. And how the marget shifts. Currently we seems to have YJ owning 2x2, 4x4..7x7, megaminx, QiYi Tornado for the 3x3, and Moyu has been displaced - despite them making great cubes. Even GAN is getting sidelined with their high prices, and cubes that are not that great for everybody. Having 4 big players is great. And moyu is still big in other markets than the current leading flagship. They have great budget options.
YJ big cubes are no longer the best imo, except for zhilong mini 4x4 and mgc 5x5. YJ 2x2, square-1 and megaminx are still at the top as well tho. Not sure if they will release an mgc skewb to complete the mgc lineup.
For QiYi, their 3x3 is kind of the most popular cube at least for now. Some of their side events puzzles are pretty good too, especially for clock. QiYi clock is by far the best clock on the market. I personally main the Volt v2 Square-1 as well as the Bell v2 Pyraminx, but as I’m not really serious in square-1 as well as pyraminx, don’t think this too seriously. Their big cubes was arguably the best before mgc, but as for now there is wrm line from moyu already, qiyi big cubes are just pricey and outdated. Looking forward to the X-Man Rainbow 5x5 tho. Valk 2 was a game changer but as it’s been discontinued already, I’m not gonna discuss about it here.
For GAN, only skewb I can tell is by far the best skewb on the market. I main a UV GAN Skewb and skewb is one of my main events so I can confidently tell that GAN skewb is the best on the market at least for now. However, for their 2x2 and 3x3, those maybe arguably one of the best on the market, but this may differ depending on personal preferences. Hope their square-1 can change the market like their skewb did.
For moyu, they are dominating the top tier big cube market like from 5x5 up to 7x7. Their latest 3x3s are at the top as well, especially the wrm v9.
For dayan, their megaminx is definitely one of the best if not the best on the market, at least its my main where I am a serious intermediate megaminxer. The other like 2x2, 3x3 and 5x5 was popular at some point, but I don’t think these are the best as for now, even though I mained all these at some point.
For DianSheng, Yuxin and ShengShou, these are pretty much irrelevant already. The ylm pyraminx is still my backup main as for now, but due to the Quality Control issues, I don’t think it can be considered as the best pyraminx on the market right now. ShengShou clock is the 2nd best clock as for now, but it isn’t even close to qiyi tbh. DianSheng is playing an important role in non-WCA big cubes market, but unfortunately not for WCA hardware.
Cyclone boys is very outdated already. Even though their skewb was my very first magnetic puzzle (even before magnetic 3x3), it’s just a budget puzzle and nowhere near to the performance of the GAN Skewb. Cyclone boys’ Skewb is already the best WCA puzzle by cyclone boys already imo, but no one really uses it seriously as for now already.
Lastly an interesting one here, MoreTry, a new cube brand by former MGC chief designer. I mained their 3x3 at some point and I really like it, and seems they are releasing a new 2x2 very soon. As the CEO of MoreTry Cube has designed some very nice 2x2s before including the original mgc 2x2 and the mgc elite, I really have high hope on this one.