I love this one because it's natural, this isn't a character it's literally Brock Lesnar. I can't recall any great Shield promos off hand ( I can't even remember them getting extended mic time sadly) Ambrose was excellent in his little moments on Piper's pit and during his promo with Punk the week before though (probably the first time he's shown his ability in a fair bit of time), Bray has had a few very good ones already which I won't post as I'm too lazy.
The first part in particular was awesome.
Heyman is the same as The Shield for me, I can't recall a great promo he's done mainly due to lack of mic time from him (he gets it but not like I hoped he would, he's usually carrying some kind of extra attraction and Paul's the accessory). This is one I do remember is when Steph came out being pretty good from all parties though,