the best in my opinion is the Valk 3m, I got an angstrom one which is still a good bit cheaper than the Gan 356 X and it has helped me become sub 10. although if you really want one of those three I would go with the gts3m because the x is just as good but more expensive.
Hello! I average just under sub 10, my biggest tip for you is to practice doing solves where you don't stop your turning AT ALL, you might start out getting much worse times but if you ever watch the pros solve, they barely ever have any pauses. So work on getting fluent in your solves.
Hey I am going to try to sell some of my used cubes! the puzzles I am thinking about selling are these:
stickerless Gan 356 x ~30$ PENDING
stickerless Moyu weilong GTS3 M ~20$ SOLD
stickered Gan 356 Sm ~20$
stickerless Gan 356 I ~60$
stickerless Qiyi Wuhua V2 ~20$
stickered Qiyi wuque M ~20$...
Learning coll is pretty much essential for zbll, every single zbll recognition is based on coll, you see what coll it is and then what the edges look like. Also, every coll is a zbll that you will HAVE to learn anyway. So you can learn zbll in any order you want, but it will only make you slower...
I highly recommend you definitely learn 3x3 soon, and 4x4 will be fun and rewarding. Also i recommend getting this 3x3, and this 4x4. I don't have a recommendation for 2x2 but I use this one and it works well.
x2 L D' L F R' F D' // Cross
R U' R' L U' L' // 1st F2L pair
U R U R2 U' R // 2nd pair
U R U R' y' U2 R U' R2 U2 R y U' R U R' // 3rd and 4th pairs
U f R U R' U' f' U' F R U R' U' F' // OLL
U2 R U' R' U' R U R D R' U' R D' R' U2 R' U // PLL
Next: L' F2 L' F' U' D B L B' R B2 R2 U R2 F2 U R2 D...