It's funny you should mention Green energy because I recently bought a standard deck from one of the guys at my local game store which is going relatively alright, I made the edit of splashing two Rhonas' in by replacing two filler cards that were in there, paid $35USD after store credit which I think was pretty nice for the playability of it (
http://tappedout.net/mtg-decks/24-10-17-Rqs-mono-green-energy/ ). On the note of White though, Ixalan's white Vampire support was really nice but doesn't stack up to like the Shadows over Innistrad or Eldritch Moon Vampire stuff