After a GPT I went to this last Saturday (Won with TES), we ended up having a casual tournament for fun with various decks and I ended up winning with Mono-U Merfolk. Played against Goblins, Planeswalker Control, Miracles, Esper Stoneblade and TES. Due to a huge misplay on the Goblins', I ended up going 5-0 and having a lot of fun.
I personally still think that Mono-U is the way to go. I run 2
Dismembers in main and I absolutely love them. Sure there are a small handful of matchups where it's lackluster, but it really improves our bad matchups and was one of the reasons I beat Gobbos G2.