Leben Owners: which speakers do you use?

I was talking to a fellow Audiogoner about our Leben CS300XS; he made the very good point that the model is in an unusual area: "it's not low powered set, not mid-powered like a lot of el84, el34, and kt88 push-pull tube amps." So maybe you have to take care speaker matching?

He's using Audio Note AN/Ks and liking them. I have Devore Nines and like them a lot (though for various reasons I am moving the Nines somewhere else and I'll be on the hunt for new speakers... hence the thread). I know Devore is a natural for these, maybe partly due to In Living Stereo/Tone Imports (that's where I heard the combo and fell for it).

Anyone else? What have you found? Especially the smaller Leben, but 600s too.