I am also a Tetris player and I play NES Classic Tetris on the original NES console. I participated in a CTWC West Coast tournament two months ago in January. My personal best is a 805K but I qualified in the local tournament with a 650K+.
It was a Top 8 tournament bracket and I landed on the #8 spot. I lost in the first round but it was great to be part of the Tetris community as a whole.