I had some difficult to drive (4 ohm, sometimes 3) speakers that I really enjoyed.
On guidance from a super helpful LHF member, (thanx again Loach71) , he got me on the BGW track.
I have a beast 750D on the 250Ti's and a 250D on the rears, both controlled with a BGW 203 preamp. These are essentially MILSPEC gear.
The pre needed some maint a couple of years ago, I took it to the guy who most likely is the best in N. Oregon/S. Washington. He commented on it "A real pleasure working on quality gear like that"
Also have a 320 distribution amp, but have never even tested it , pristine condition tho.
let us know how the new gear compares