Decided to get the 1000. $499 on Amazon Prime with free shipping, so about $100 above the prices I was seeing for the 810 from most mainstream sites.
Main hesitation is how it suits with the ENVE extension. It will work. But has to sit a bit higher. Decided that was a fairly minor consideration.
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You could fall off a cliff and die.
You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.