[Si Coe]

Even from the same manufacturer there often isn't that much of a parts crossover, at least not on useful stuff. And what parts do cross over will often do so across brands as long as you stay metric or imperial (nuts, balls, bearings etc) as there is a surprising degree of compatibility out there.
So whilst I've just got a DEX210, I doubt getting a 410 will offer much more parts crossover than my Yokomo does!