I prefer cash games, but I like FRolls b/c there is no risk of loss especially if I'm just chilling and having a good time.
STTs are far different from MTTs for me. I really like STTs, they are shorter, faster and stamina isn't the key issue. I'm a fan of that.
Also there is a natural Finality built into Tournaments, everybody gets shortstacked at some point unless you get lucky and have the skill to play that well. Which I also like.
I prefer cash in general because of the lower variance and it feels more fair because of that. But Tournaments are more exciting for sure.