I play Ums and mele/low money, never fastest.  I prefer 1v1 Pythons to test skills of new members of my clan.
I make ums maps, for example: God's Land 3.0, The Thing Speed (3x speed I think, maybe 4) Phantom Max 1400, Stacking Trainer for Noobs, Pokemon World battle, Where's Waldo, and a few others And my favorite UMS map varies, but some of the tops are:
Death Knights III (THe best RPG Ever, 2 player, more exciting that Labrynthos, better music than Spellsword)
Phantom Darkness 800 Max (epic)
Python 1.3 (no obs)