Here's a brief review of my Frankford Arsenal Primer Seating Tool after about 700 rounds:
https://www.brownells.com/reloading/...rod122149.aspx
In short, this is the best primer seating tool I've used. The build quality is excellent. The tool comes with 12 shell holders. It's easy to switch between large and small primers and to adjust seating depth. It's heavy and doesn't seem likely to break in my lifetime. Best of all, the "feel" when seating a primer is great. Highly recommended!