Jerseyboy,
When you have to trim "hundreds of rounds of 243 ammo" and really want to save time, then it would be smart to spend the bucks on a tool that both trims and chamfers at the same time, quickly. I've used a bunch of trimmers over the years, including just about all mentioned so far, but the real time-savers are Giraud and Gracey. They do both jobs at 20+ cases a minute. If you're willing to spend more time doing the same jobs with slower tools, then by all means spend less money.
