I used to take lessons long ago, longer than i'd care to admit, and the guy who taught me owned 2 of them.
I think one was a 700 though, but both of them played and sounded absolutely excellent as I recall.
He swore by them. He sold Les Pauls and Sg's but kept those two Yamahas. I remember him telling me he owned a few Kramers in the 80s but ended up selling those too. His main Yamaha went through like 3 refrets or something crazy.
Like I said, that was a while ago, but I'd be willing to bet he's still got those old yamahas kicking around.
Great guitars whether it be a 500,700,800,1000,1500,2000,2100 or 3000. Funnily enough I compared my mates LP custom against my SG and the LP was heavier... nothing that a good 3" Levi's or similar strap can't overcome!