MTGO vs Magic Duels vs Hearthstone vs others (Hex, Infinity Wars)

I am not sure what the status is regarding MTGO and its development. Wizards of the Coast is shutting down its own forums for all of its games. Magic Duels is playable on PC, Steam, IPAD and Android so it seems pretty cool but limited so far. Blizzard's Hearthstone seems a bit simplified but can be played solo and you can get some free stuff. HEX and Infinity Wars both offer a PVE experience but they arent backed by big companies (MTGO/Magic Duels by Hasbro and Hearthstone by Activision/Blizzard). Right now I'm trying out Infinity Wars. Has interesting/fun game mechanics and relatively stable as of patch 1.47. Fun to play and more thinking than HearthStoned. As for MTGO - I may come back and visit if the interface and gaming has been stabilized/improved. I miss the PDC chat rooms and will miss the Wizards/MTGO forums. Lots of lost accumulated wisdom there. Live long and Prosper fellow Paupers!