I really like this compilation. I use the Game B of Tetris (first to 25 with garbage on set to start at level 1 height 0) for a casual level office christmas competition. We get a field of around 16 playing in a knockout format with the final being a best of 3. The Mixed match is a nice idea too but I haven't had much opportunity to try it out. The version of tetris feels a bit old with no hold piece, hard drop or wall kicks but it's still a nice version and it goes down really well in my little office tourney (played through a projector for BIG screen Tetris!!).
Games listed in my signature. Sorry for the bad picture, have no space and didn't feel like getting my tripod out, or cleaning lol.
Picture of my collection - just because. Have since picked up standard edition of Super Tetris 2 + Bombliss and Tetris DS.