Well the v4 100's have a max power rating of 210WPC (8 ohm) and the amp should be able to deliver at least that amount of power without clipping. I'd idealy love to have about 300WPC (8 ohm) to drive the fronts and center even though I'd never drive them that far.

Part of the advantage of the more powerful amps is that they tend to have larger power supplies and the end result is better performance even when your not pushing out max power.

In fact, I'd have no problem driving my 100's with as much as 500WPC (8 ohm).

Brian