Using our agreed logic above (get an amp near the RMS max of what your speakers are rated for) an ADA-1250 would do the trick for me with 225 watts RMS at 8 ohms my m60ti with the upgrade path to either m100 or LFR. Or do I spring for an ada-1500 with my giant room and run that with my m60ti? Should be fine i think....it will supply 325 rms into 8 ohms.
I think Rich had the best answer a few pages back in the speaker only pulls the amount of current needed at any point in time. Wrapping your head around the RMS max is a bit of a fools game in speakers are never played at RMS max. buy that i am saying that in listening to music on your speakers, I don't know of anyone who would want to be listening to a constant tone that will generate the RMS max condition. Music is a constant changing sound output that some parts that are load may be using far less power than other parts that are seemingly quieter but more complex requiring more power to create.
I recently moved from a set of passive LFR being run by an ADA1000 that at no point did i experience any feeling that the output was being compressed or distorted by running out of power. The new Active LFR are getting powered by two 5 channel ADA1500 and I can not personally that I am hearing the night and day improvement from regular listening volumes. The Active can get louder than my old ones. I have set my Pre to limit the volume to -15db. Working on the concept that sound volume doubles every 10db, I know full well that I could if I wanted to get the speakers to be 8 times louder than what I have it limited to and maybe it is at those levels that the 1500 would shine well about the 1000 that I had, and my experience is contained in just not listening to music loud enough.
