Doing the math, that would mean one speaker would be capable of peaks at 119dB SPL at 1 meter (no room reinforcement). That's insane. With speakers that efficient with modern content, 100Watts would be more than enough. With older truly dynamic recordings (like the really good stuff pre-1980s), 200 Watts might make sense.
I came close to pulling the trigger on a used 2505 today on auction. $500. But heldoff since I realize a few things
1. I promised the wife no AV purchases for remainder of the year
2. My current stand can't accommodate two amps
3. I have a daughter with a birthday soon
4. I probably want to swap my rears to match my fronts first.
I think the Monolith 7 x 200 for price is my future best bet