1 Amp Per Driver vs. 1 Amp Per Cluster?

Hello Everyone -


Curious as to what the benefits would be to having 1 amplifier per driver vs. having 1 amplifier driving a group of drivers?
(Ex: In an MTM setup, having 1 amp driving each midrange vs having 1 amp to drive both midranges)

Wondering if there would be reasonable performance benefits compared to added cost of having extra amps?