Hi Dellbert
I haven't really decided on my preferences yet. All of them have pros and cons. The '51 Navy is iconic and a nice pointer, but I find it a bit too big for a .36, weighs nearly as much as the Remington .44 NMA. The Rider has a pleasant size and weight, but it's a DA. I always shoot it SA but the last trigger pull still is a bit too hard. The Manhattan has got a very nice size and weight, shoots really good, but is just a 5-shot. The most noticeable thing is the Colt and Manhattan cap sucking, never happens with the Rider.
I have tried a new approach to fight the cap sucking by fattening up the nipples of the Colt Navy. Put up the nipples in the lathe and let them rotate slowly while silver soldering a layer onto them. Now have to press the caps on really hard with a wooden dowel. Shot a couple of cylinders yesterday and for the first time had no cap issues.