Although the actions are more or less the same, the Henry is really more of a nostalgic choice. It loads by twisting the end of the barrel and down a tube. It has no forearm. I would like to own one just for the fun of it, but it isn't as practical as the later "improvements".
The 1873 has a forearm and a loading gate. It's more practical for field use and in most available configurations a bit more handy than the overly long 1860. And it's half the cost, depending on the chosen options.
