If you want the best bang for your buck, I would tell you to go and buy the MoYu HuaMeng TG 3x3 (Magnetic, Ball-Core, UV Coated).
In my opinion, it is the best cube to be released thus far. If you don't want to spend that much money, an RS3M will do just fine.
However, you can really notice the difference between the two cubes.
The Huameng TG was developed by Moyu and the former world record holder for 3x3.
Many of the pros say that this cube is the best cube out there. (once set up!) Most notably Luke Garret, one of the best cubers alive.
If you like customization features, this cube does not dissappoint!
With 1620 different settings, you will most definitly find one you enjoy!
All of this information brings me to the conclusion that this is the best cube of 2024.
That is of course subject to change in the event of a better release this year. That is however, very unlikly.