"I plan on Protocraft exclusively and they blow Kadees out of the water (or off the tracks in this case)"
It will take about 20 years to find that out. I have some of the oldest Kadees and they still work fine. The problem I see with these new couplers is they have a moving pin that is likely to get gummed up over time. I've used all the various operating knuckle couplers over the years and none have been as reliable as the plain old Kadees. The Kadee design uses geometry instead of relying on a moving pin which is much better design for operational reliability...DaveB
