I own about 5 or 6 3x3s in my cube collection. But I thought my RS3M Jperm cube was the best and nothing will beat it. But that was back when I first bought it back in 2020, based on the fact that I broke all my current PBs of finally breaking 10 on a PB 3x3 solve, breaking 14 seconds in an average, and much more. But now that I've owned the JPerm RS3M for over 4 years now, it's time I changed it out as it's literally like eroded the screws from all the lube I've added and it for some reason dispute having tightened it a center piece just pops out for some reason and it ruins every or so solve. But I've owned even the 2022 Super RS3M Ball Core MagLev version for over a year since I bought it for sale for like of course less than $20 when it was like a year old in 2023, it seems slow in comparison to my most recent purchase of the V2 Meilong 3x3 M. Which I love because of how light and fast it is, but I hate how strong the magnets are, how much lube I need to add to make it quiet and actually controllable, and I hate how there's no dual adjustment system. So I have decided I actually am going to main the 2022 Super RS3M as my main cube or switch to the V10 WRM or Super RS3M V2 as I know they're basically the same as my current main Super RS3M 2022 or V1 but a lot faster which I love because I like a fast cube since I kind of don't like how slow the stock Super RS3M ball core maglev is since I need to be constantly added extra lunar. But I still give a 5 out of 5 for exceeding my expectations and becoming by current main.