Amplification to B&W 800 Diamond

sitting on theese beutiful speakers, and wanna upgrade on amps.

For the moment using two Electrocompaniet aw250 Bridged. with Ec 4.8. Emc1 up, nordost (from frey-Tyr)

sounds ok, but wanna go for the better!

Thinking about MCintosh, pass labs, Adyton,

hoping to get some respons from guys having the 800 Diamonds, or have experience with different setups, sound characterstics of the different brands used on theese loudspeakers.

thx already for answers ;)

Frank