Months ago I was looking into a pair of B3 Pro 1s and I was dissuaded by influential forum members' complaints about channel imbalances and other quality control issues. My wife just gave me a pair for my birthday on the 27th and I've kept them burning in non-stop since I opened them. They have a long way to go yet, but I'm really digging the colossal sound stage and spectacular instrument placement. The hype is real: you really do feel like you can pinpoint every instrument, vocal line, and digital sample's position in physical space—almost like you can close your eyes, reach out your hand and grab the drums or bass or whatever. It's pretty incredible.
These are already sounding like a cousin to my Zero Audio ZH-DWX10 Duozas, albeit without the sub-bass emphasis and featuring more lively treble (basically, more tonally balanced). I wish I'd gotten these much sooner and I'm really looking forward to hearing them once they're totally broken in.