All three seem to have a bit different finish. The red circle has an off white color and possably a harder finish. The "logo" cb is whiter and seems to hold chalk marks more. The Aramith red dot ball is difficult to keep clean and will chip easier if bounced off concrete floors very much. There is always some disscusion over the weights but I suspect manufactor's tolerance can vary quite a bit.
Beware of a coin table red dot, that thing is heavy to work in the old gravity return mechanism.
