Much of the 1960's Atlas tooling has reappeared as the Trainman line; of course the
trucks and couplers are different. I have early Atlas sitting next to Trainman and it's
obvious. Better graphics today, also.
Having said that, the 1960's O-Atlas (not Atlas-O) is sharp and rolls well; the Atlas
couplers mate with O-gauge couplers pretty reliably. Sometimes the couplers are -more- reliable than the regular O-gauge type, and aren't much uglier.
The cars are light, but that is why we have the phrase "add weight".
The trucks are very handsome, and the all-plastic construction is of no importance
to me. Will the plastic wheels wear our before metal ones? I'm sure that they will,
but they'll outlast me. I've actually bought some of these trucks at train shows;
usually cheap, they are great for converting old 2-rail cars to 3-rail. Fiddle with
the mounting setup, and off you go.