I have a pair of Wayne Picquet restored 57’s on his metal stands. Astonishing speakers! Also a pair of 2905’s that I bought new which have their own strengths, mainly in power handling and bass extension. I cycle back and forth between them depending on the music content. I’m planning to move, thus both pairs are for sale here in Southeast Florida ...not yet advertised. The 2912’s, I feel, are very marginally improved and not worth the dollar premium over a pair of used 2905’s. As an aside, whichever model you prefer, you owe it to yourself to listen with a Sanders Amplifier. He has a free in home policy, so you can not go wrong.