I'm not an expert.
I bought some reloading gear a few years ago at an estate sale. The price was too good to pass up.
Included with everything else was a Ram Priming Tool from RCBS: Ram Priming Unit - RCBS
I like it just fine, but I haven't used anything else so there could very well be something better. However, I have no urge to change.
That's the one I ordered. I already have the base plate so I can remove the press and mount primer. I also cut a wood block to fit the base plate and attached my new to me Redding case trimmer. Now everything is rigid. Wish me luck.