I think in short @fendersrule you’re going to be happy. These have a very live sound. I think they need to be carefully paired with equipment driving them…you mentioned your friend driving them with tubes. Paired with appropriately laid back gear they are just so damn fun.
I’ve listened to a decent assortment of moderately priced hifi gear. These seem to strike a balance between detail and live sound. The holographic effect I think is elevated with the rear porting so I expect people to really enjoy tubes or tube pre’s with this speaker.
I m super interested in what you and your friend think. I’m just a random guy on the internet who probably drinks too much.