A few years back I picked up a used Co-Ax press at what I thought was a good price. The original owner had it set up to use a shell holder to do the priming. I ended up having to purchase some new parts for the press. The primer catcher jar lid was damaged and that needed to be replaced. By the time things were all said and done, I had invested more than a new press would have cost me.
Once it was up and running and I was able to use it for some of the odd calibers I load for, I really like the press, don't much care for the priming system but it does work. The big up side I found was when I use a bushing die, the co ax allows things to be set up so that things run true. Not the case with my lyman press. I have made a set up for the co ax that does allow me to size bullets, and it does a very nice job of that. All in all I like the press very much. The Lyman just collects dust and I can't honestly say when the last time a die was in that press. If I were to name one aspect of the press that I really don't like, its the pointed rod that opens the case holder jaws. Sometimes I have to set things up to use a standard shell holder and I have to take that pointed pin out as it will not screw down far enough to go below flush. A new pin with more threads on it would make life so much easier in my opinion. Other than that I feel its a really nice press and I have no plans on getting rid of it.
Sam