I recently paired up my Luxman CL-38u and Mark Levinson 23.5 in my 2nd system, and was immediately taken by the great match they make with my Proac Response 2.5 speakers.
I have no experience of any kind with Wilson Watt Puppies, but I can say I'm not tempted at all to switch things up with the current matching for my 2nd system. I was previously driving the 23.5 and Proacs with a BAT VK-32SE, a combo that sounded very nice, but switching the BAT out with the Luxman gave a pronounced smoothing of the top end and what seems a bit of a fuller lower end.
I hope this helps - enjoy the music!