My wood stove up in my cabin is the Sotz airtight kit for the 55 gal drum stove. It works great. I also have the full set of Sotz tools for it (poker, rake and shovel).
After breaking the wood handles on numerous 6 + 8 lb wood mauls, I used the Sotz maul for year, then larger Monster Mauls of the same design. Never broke the handle on one of the metal mauls, and I used them a lot.
However, since I got the Fikars X-27, the mauls have been all but dormant. I only got the Hydro Spitter after I split 15 cord by hand and developed tennis elbow. However, all the wood up at the cabin is still split by hand.
If you split regularly, and don't over-due it, I believe it is a healthy activity. In fact, when I heated the home by wood and had the Sotz maul, I made wood splitting part of my daily exercise routine, and I was in very good shape back then.