Miz is adequate as a heel, but he's been a bit ruined for me by the fanbase. There's too many people on WWE Facebook comments crowing about how he's the greatest commodity the company has and the best wrestler of the past 10 years, because he's been booked super strong and he gets the last word in all of his feuds.
There was a guy a week or two ago, whose argument was that Miz is a better promo and a better performer than vintage Ric Flair