I have used Maggies for more than twenty years and for most of that time was very happy using a hi quality 100 watt/ch class A/B amp. Now I drive them with a Rogue Farrah and it does fairly well, but I am not completely happy with the sound, and I am not completely happy with my hearing, so not sure what the problem is. However, I am sure of the beauty of Maggy sound and the need for clean power. Stop trying to use low power tubes to power them and switch to any number of reasonably powered solid state ( including modern Class D ) amps and you will rewarded. I might add that a couple of years ago I added a 12 inch SVS 2000 Pro sub to the system and it filled up the bottom end quiet a bit. Don't let anyone poo poo you on the new SVS subs, they are pretty good.
Good luck on your search.