likes on the lee quick trim system
its efficent, consistent and affordable
3 function (trim, chamfer, debur)
trim time is between 4-6 seconds per case, depending on the caliber (with power trim adapter). I find that for example a 308 case will take about 1.5-2 secoonds longer to trim than a 5.56 case will. i suspect its based on the neck thickness we're dealing with. roughly speaking once you get in the groove you can do 400-500 cases an hour pretty easily.
doesnt require the user to hold anything other than the press handle and the rotation device. very user friendly on the hands!
dislikes:
that cheap ass plastic adjuster collar they give you. (buy like 5 of them to have on hand, especailly if you'll be using a power adapter)
if you really wanna get it working well it does take a litle tweaking of the engagement bearings inside the cutter
see the following vid for the tweaks i've used (following the posters method)
https://youtu.be/H_9jDh2cK8o?t=407hth