Oh, please don't be confused, it's for fun !
To set the scene where the action takes place, I'm presently bi-amping my very ordinary 90 dB 3-way 40 yr old DIY speakers with a pair of Kenwood L09-Ms for the lows and a Parasound A23 for the highs - already 20 times as powerful as needed and heating the room like crazy, but I like it !
Yet I'm considering downsizing...
So, to go back to Purifi amps, of course the highs don't need such power, but I don't know of a 25W amp with SOTA performance, balanced inputs, and that would be happy with 8V RMS input voltage - so why not go for the 250W (8 ohm) one ?