This isn't a complete review because I haven't actually used the Vision Nova for long. I absolute LOVE the design and hope they keep improving. That said, I'm having reservations about the quality, especially with the 510 connection and the inaccurate ohm readings. However, I think they can only improve. BTW, I understand the heads are rebuildable which is absolutely fantastic!
Part 2 will be posted next week after I've had more time with them.