I bought one (a Load All I) for my father for Christmas around 1978.
He and I loaded quite a few thousand rounds of 12 gauge on it and never had a single problem with the device itself.
Is it fast? No.
Is it effective? Yes.
Is it durable? I'd say yes.
After shotshells started dropping in price (after the 1986 FOPA) we really cut back on the amount we were reloading and were buying the lossleader shells, but I'm seriously thinking about firing it up again.
I've said it before, and I'll say it again, for the casual reloader, Lee products simply cannot be beaten.
Even for the moderately serious reloader they are hard to beat. I've got a Lee Classic Cast turret, and I fully expect it to be the last press I ever have to buy.