My favorite is the DaYan GuHong Pro M (standard version), I'm usually sub 15 with it. If you want a more customizable cube, the Tornado v3 is probably the best choice.
https://lichess.org/KfkobMc6/white#43 a game where I sacked 2 rooks for checkmate
https://lichess.org/nJbVI8Gq/white#59 a nice attacking game
you can't.
White: Scotch gambit Black: Scandinavian defense, Bennoni
I hope this will help: https://m.youtube.com/watch?v=7Ron6MN45LY
Congratulations, that is a big achievement!
congrats, very well played!
I recommend the Queen's gambit and the Smith-Morra gambit
Resign.