>>11221485If you are starting out, dont buy anything from Rubiks, even though it may be your first thought. Their stuff is fine if you only wish to feast your eyes upon it. Their cubes are terrible for practicing your muscle memory, as they pretty much dont allow for corner cutting.
Gan i remember as the top brand for speedcubers, you could always see feliks zemdegs use these during tournaments. Kinda expensive for what they are.
Personally i settled for MoFangJaoShi, I think they are daughter brand of MoYu, sold as "cubing classroom" speedcubes. Best bang for muck imo. I have them from 2x2 up to 7x7, nothing extreme, but they give you a lot of room for imprecision when doing quick sequences.
If you are more into modded cubes and puzzles, MoFangGe has great ones like Square-1 or gear cube. QiYi also does a lot of cool stuff. I have a Megamorphix from them