GoT Pro is a great game. I enjoy it every time I come across it, whether it's casual play or in competition. I'd stay away from the premium/LE version. That upper playfield is awful and way too big.
AC/DC, however, is probably the best game Stern has ever made, and I would pick it over anything else you could put against it from Stern. There are so many great ways to attack that game, the shots are great, and it can be set up to be absolutely brutal when needed. The game has a great rule set, a great light show, and is a bit more varied in gameplay than you'll get with Game of Thrones.