They will run on any O Gauge track. The RMT cars have very good paint and markings, plus RMT offers some road names that few or no other company offers. Their prices are very attractive- about half of Lionel and MTH prices.
The RMT's I have, up to now, are light and benefit by adding some weight up to the 14-15 oz. total level. I use automotive "sticky weights" that are 1/4 oz. each X 12-15 sections, spread over the inside of the car. On hoppers, I use lead shot CA'd into the inside bottom.
Trucks: Previously, RMT's truck-mounted couplers have had the older type w/ a magnetic coupler plate designed for remote activation using a remote actuating track, not the current "mushroom" or plunger type of "hidden" coupler opening tab. You can open the coupler by removing the car, OR just do the old fashioned "lift and join". I (and many others I am sure) do that anyway.
BUT- their latest announced cars DO have the hidden coupler tab on all diecast trucks. I don't know if they are changing the spec to their new couplers on re-released cars, or just on NEW production.
I have and would still buy RMT cars especially with their new couplers.
