I am looking to add an amplifier to my Pioneer 811.
I am just not sure if I really need 200w/channel. Would the new 7100 be enough?

What is the difference between going with m200 mono blocks vs. 755 /770/7100?
Yes there is size/wattage but is there an advantage to going with the m200 vs any of the other ones.

I have all Acoustic Research Hi Res speakers that have a rating of 91db- 93db. Do I need 200 w/channel on these or will 100 do?
The only other amps I have interest in are the Parasound but I am interested in getting some type of outlaw amp and then maybe
getting the 950.
Any thoughts would be great