Getting back to the original post topic......
I've tried both the RCBS and Lyman hand priming tools when I researched taking my priming off the bench press and have found that the Lyman has a more solid slot design for where the primer tray slots into the handle and I like the tray better. The ripples in the Lyman tray easily turn over any wrong side up primers with a tap or a little shake.
With that said, until I went to hand priming, I hadn't ever put a primer in backwards or crushed a primer while trying to seat it. You're going to mangle more primers with a hand tool than you would on a press mount.
As to the "feel" of the primer seating properly, in my experience you get more feel from a hand primer than you can in a bench primer simply because of how you apply the seating pressure. I can feel a lot of things when I reload at the bench through the press handle, but the primer seating correctly isn't one of them.
And that is what my experience tells me on the topic of priming tools.
As to "accuracy" and how primers relate to that, my experience and research indicate its more the type and weight of the primer charge setting off the powder thoroughly and evenly.
I use CCI 500 pistol for my pistol loads - haven't had a problem in my pistol or carbine.
I used to use Winchester, but had found that the Winchester primers seemed to foul the brass worse with GSR. CCI 500 primers seemed to leave less residue in the base of the brass - so less to clean out.
