It would be great if the only ones able to comment in this thread were those that have actually HEARD the WE91 amp... I did- in fact auditioned it- for an hour- and yes, it was well warmed up beforehand. The looks are controversial, but ease of use was very good, and I thought the amp to be reasonably attractive in a 'modern' sort of way.
As for the sonics, positives first- I was quite surprised by how tight the bass was for a 300B amp- very impressive; detail retrieval also quite good. *However, it just didn't bring the magic I was hoping for. I can't 'fault' it per se, but it just didn't bowl me over in any way. I have heard much larger billowing staging from other top notch 300B amps, along with better depth and note decay.
In summary, I walked away thinking it was a nice 'lifestyle' piece. Someone might have this amp in their living room for dinner parties and guests would compliment the looks of it. But as a serious take no prisoners performance piece? No- just not enough there for me- maybe a solid '7', but at the asking price, there are many others I would choose instead.