I said both Bryant and Greg. Greg is BORING. He never gets excited about anything. True, Greg certainly isn't a ball of fire, but he's competent. I know that even the best make mistakes, but Bryant was just horrible.
My favorite play-by-play announcers are Dick Enberg, Mike Patrick [though he's not doing NFL anymore], and Joe Buck. Greg Gumble, Jim Nance, and Al Michaels are OK.