Colt revolvers aren't my area, but you've used the word collecting.
Collecting is a term with many dimensions. If your interest at this time is limited owning a variety of cool snake guns to shoot, and your question is which is the best shooter to start with, that still counts as collecting. But if you have a more focused interest, or think that someday you might develop one, there are some experienced collectors on THR that can provide advice on the many other factors to watch for when building a collection.
Snake guns aren't cheap, and even if shooting is a primary goal they will still represent a substantial investment. Some food for thought.