One thing I know about my Virtuoso Plus, it is a tank. It is stronger, more powerful, at sustaining unintended blows than any blade I have ever seen. I have slammed it full force into the edge of the table by accident and thought I was going to be needing to do tech work on the wood and not had to do anything. My Virtuoso Off- is decently solid. But not quite as indestructible. Still, it never sustained damage that needing fixing. But it never sustained the kind of blows my V+ has taken. Prior to using the V+ I thought Butterfly blades were the most solid in this way. But nothing I have seen could compare to my V+.
I do, personally feel that the two plies of Limba, one on top of the other, allows the V- and the V+ to spin the ball better than anything else and I love the big wood feel of both blades. So, I would actually say, the Virtuoso blades are a few notches better than any mass produced blade I have felt. But you kind of have to be a weirdo like me to really feel these kinds of differences and have them matter to you. My actual favorite part of playing is what the wood feels like when you dig into the ball. And for me, nothing really compares to the two Virtuoso blades, except a few blades I have tried that were made in the early 1990s: 1991 to be exact and the blades were an OLD Stiga Clipper and an OLD Nittaku/Avalox P-700s. The Virtuoso blades feel closer to that feeling than anything else I have felt. But the OSP blades feel slightly softer than those blades and those old blades felt a bit crisper.