I've been a fan of Nickel for a long time. Then I built a pair of Paraours with Co pinstripes and love them.
My recent creations, though, have Mike's silver. I have a preamp with Ag transformers and a set of amps with Ag outputs. I'm just loving them. If you guys have the chance to jump at Mike's current Ag offerings don't miss the chance. Use them in your Paramours, Paramounts, Parabees, Excites or whatever your favourite BH circuit is. You will be very happy.
Saludos to the BH family.