Manley Neo Classic N250 Mono Blocks

Hi folks. I'm looking into a pair of these mono blocks, and was wondering if any members have any experience with these units.
I have never owned them but listened to them many times at Az Hi Fi when they were located in Tempe.  I would definitely consider owning a pair if I had room for mono blocks.
They had them on a variety of speakers and in the times I was there, I never heard them sound less than impressive.  If you have the room, go for it.