i'll agree that the new primer tray is crap - it gets the job done but it feels like a flimsy POS.
not much of an "upgrade" from the old system other than its probably half the price to produce. Lee "upgraded" me to that when my old one finally cracked on my hand primer.
i hardly use the lee anymore as i usually prime on press with my LNL-AP, or the CPS-Lite from Primal Rights (that i was fortunate enough to be selected to do a review for here on the forum) but it sure was fun watching my buddy when i was helping him learn to reload to struggle with it as a learning exercise! i let him do a hundred cases with the lee, and the pulled out the CPS and he was like... wait... what? lol