Back in the late '70s, I had a pair of Ohm Fs, best speakers I've ever owned by far. They were powered by a McIntosh 125 wpc amp. Plenty of power, you would think, but somehow the speakers never would get loud. Partly it was just they sounded so good, you always wanted to turn them up! Whatever the reason, they would only go so far, then level off.
I don't think the current Walsh speakers are that difficult. They have a separate tweeter, a ported cabinet, altogether a more practical design than the F.
I think if you look around you can find the NAD T763 for just over $1000. You might also investigate Harman Kardon. What you're looking for is a high current design that will deliver its' rated power into low impedance loads.