I like both of the Dayton amps mentioned above. New, nice sounding, very quit amps for peanuts. At the price, they are perfect amps to buy as a backup and to compare other amps to as you progress on your upgrade path. You might be surprised how an exceptional low priced amp used as a comparison standard can reveal the pros and cons of "real" upscale amps.
I have more experience with the DTA-100A, which is a "t-amp". It seems to have plenty of power with several speakers I have used it with, but never tried it with a demanding 4ohm load or one with low sensitivity.
The APA 150, which I have only recently aquired is rated at 75wpc @ 4ohm, so might be more suitable for your Statements. My guess is either would work well with speakers claimed an "easy load most amplifiers, even tube amplifiers capable of 4ohm loads".
I have more experience with the DTA-100A, which is a "t-amp". It seems to have plenty of power with several speakers I have used it with, but never tried it with a demanding 4ohm load or one with low sensitivity.
The APA 150, which I have only recently aquired is rated at 75wpc @ 4ohm, so might be more suitable for your Statements. My guess is either would work well with speakers claimed an "easy load most amplifiers, even tube amplifiers capable of 4ohm loads".