My first run Shocks and my Volt definetly have some overlap, but still not a lot. The FR Shocks have a lot of turn, but a lot of good, forward penetrating fade as well. It reminds me a bit of a really good Eagle...like an 11x KC Pro but much, much longer. Super versatile. My Volt has some turn, but more like a worn-in Teebird than an Eagle. These are highly imperfect analogies though. MVP is very unique.
The newer run Shocks though are just super beef. No overlap with my Volt...or my Teebirds for that matter. It is a true overstable disc. It was the most overstable disc in my bag until I got the Stilleto.