I have, and they look just as vague as every other flight chart or number system. Just like a good book, the reviews on the back don't tell me the story. Cracking it open, bending the spine and pouring over every word until you have a headache is the only way to know a story.
I think the MVP flight chart is actually a great attempt that turned out bad. I was trying to describe some MVP discs to my dad, and I showed him the Volt-class chart from the MVP site (since the Volt is the greatest disc release int he last five years...have I mentioned that before?) and he took a look, looked back at me and literally said "What the **** is this mumbo jumbo?"
My dad has been playing since the 70s, so he's seen plenty of flight charts. I don't think anyone has got it "right" yet. Its a damn tough thing to do.
Back on track: my wife said my Teslas arrived yesterday, but she won't open them until I get home, no matter how much I beg her to! Hurry up May 6th!