While I haven't actually watched it yet (as it just shipped a day or so ago), I'm eagerly anticipating getting "Remembrance of the Daleks" as I hear it's one of McCoy's best stories and the point where his era becomes good. Though for me that will probably mean it will become really great, because I've loved all of McCoy's serials up to this point.
Oh, which have you seen? Because I'd break down the McCoy stories a bit like this:
Great: Fenric, GhostLight, Survival, Remembrance.
OK: Happiness Patrol, Battlefield, Dragonfire, Greatest Show.
Painful: Time and the Rani, Paradise Towers, Silver Nemesis, Delta and the Bannermen.