This is a fantastic thread - glad these are working out so well for you.
The single most accurate handgun I've ever owned was a 5" 629 Classic full lug - that I idiotically traded off for a Mountain Gun in 45 Colt that wouldn't hold minute of barn door by comparison. I'm with GJM and 03RN on this - I love the look of that 69, but wouldn't want to go under an N Frame for anything starting with "4" and ending with "Magnum." Roll one out in .45 Colt, and I'd be sorely tempted...