I just purchased some of the Walthers couplers because of this thread.I don't see that they're (much) larger than the KD#5's; not enough for me to consider a wholesale change-over to them.I do like the looks of the 802's,and don't hate the spring system,it seems, as much as some.... They are actually just like the KD O scale couplers,with the coiled centering spring.I personally like the "slack action".
Mark in (now wet) Oregon