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Clay Fraizer recently had a screenshot on his Facebook page showing that he hit *500* wpm ...!
The theory is he wrote a few phrases that boosted his speed a tad over a one- or two-minute period.
Yes, it's nice that both the CAT software and the writer (at least my Diamante) show wpm, even if it's just an idea. Faster shows faster, and 80 wpm is, well, probably 80 wpm. A basic idea. Kind of like Chico's. I was THRILLED to discover I wore a size 3! Uh, yeah. A kinda sorta size 3.
Without double-checking my Case Catalyst software book, I'm pretty sure it's how fast you're writing, not how fast they're talking. So if you write everything out, you'll be writing faster than they're talking.