The call falls somewhere between two styles. Niehaus' call became synonymous with Ken Griffey Jr. home runs during Griffey's career with Seattle. It has the excitement that makes Niehaus somewhat of a poor-man's Harry Caray in Seattle. It's the most overused verb ever to describe a home run. The emotion in Niehaus' voice is enough to carry him.
Costas takes the spin-ahead approach.
After a ball clears the fence, he will often immediately give you the implication of the homer. It's a practical approach, but Costas is in a business where flash often outweighs practicality. The call is quick, but Thorne's high-pitched, screaming voice is sure to get you to turn your head toward the TV if you're balancing your checkbook during his game. It isn't as established as others. It might help Thorne to use a consistent phrase between when the ball leaves the bat and when it falls over the fence.