I will give my review of this cube since I have had one since it came out and I got another backup for Christmas so I have multiple experiences with it.
Where the puzzle was purchased:
TheCubicle, and SpeedCubeShop
When the puzzle was purchased:
Release, and about Christmas time
Thoughts on the puzzle:
My first impressions with the cube weren't amazing, it was dry and didn't perform the best. With some setting changes and lube it turns into a drastically better cube. So my personal settings for it have it lower gear 1 and upper 2. It can only really be good on looser settings, especially the gear where 1 is the best and 2 could work, and make sure to set the gear to 1 to take it apart so you don't risk breaking it. As for the lubes my personal setup that I have tested and played around with a bit is Dignitas on the tracks and 1-3 drops of Fz Calm whenever it starts to drop in performance. I will add that my settings of 1 2 are more for OH, but they still work really well when I use it for 3x3, so you could start with 1 2 and go from there to find better settings and personalise it for you.
The breaking issues that some people have with it may be caused by general recklessness coupled with the gear being on a higher setting. Since it is a fairly tight puzzle to start with, trying to take a piece out without knowing the proper way and having it tighter will increase the risk of breaking. Though I have been very careful about that, turning a face 45° to take an edge out while the gear is on 1 and I haven't had any issues.
I have only tried the Spring UV version, but it is already a really fast puzzle, so I would save the few bucks and go for spring and not maglev unless you really like maglev. There is an issue I do have with the puzzle, and any Moyu cube in general, that is more explained in
this video. My personal take is that with Moyu's plastic it degrades over time and becomes worse, many top cubes have needed to buy cubes again and again just to have them perform well. For me I noticed that the V10's plastic degraded to a noticeable difference after about half a year from purchasing my first cube. I don't think there is currently a fix for this aside from buying another puzzle, and it is definitely more noticeable in OH than 2H but it is still a problem for both. Overall I don't think this is something to fixate on, just to take into account since the puzzle still has very good performance even with the current plastic state of my first cube. DSM explained it better than I have so watch the video too if you can.
Ranking The Cube:
Overall the puzzle is one of the best 3x3's I have ever personally tried, and I have tried a ton of the newest 3x3's. I would put it safely in the top 5 3x3's I have tried, and top 5 overall. If you do OH then I would say it is a clear favourite and I would rank it as the best I have tried, though I would safely say top 3 is the popular placement.
I will give this cube an 8/10 since the performance is amazing with some setup and break in, but the plastic degradation drops the ranking by a little bit.