4v4 tmm is faster than lobbysim, has decent mirror balance, and nice variety of maps to suit different players. All my FAF friends play tmm rather than making lobbies now and its pretty fun.
I dont play much 1v1 because its kinda intimidating, i feel the early game is quite BO dependant and sweaty and i'm just not very good at that.
I don't play 2v2 at all because I got really overrated when it came out and played a bunch of matches in a row where it was me and 3 other top tourney players in the same game, whoever got me on their team just lost brutally and i felt real bad for them.