I've used a handful of different trimmers over the years.
Started on an RCBS manual lathe style trimmer. Still have 2 of these set-up for low volume shooting. They work well and stay consistent. I finish up the chamfer and deburring on an RCBS motorized station.
I tried the Lee system. Meh, it works but I felt it didn't really save time over the RCBS (especially with a drill on the RCBS). Tried an off brand some guy was making out of delrin that was similar to WFT. Not a bad system, but still had to deburr and chamfer in separate stage.
I ended up grabbing a Giraud Tri-Way for my 223/556's since those were my highest volume rounds. I'll never go back! They are consistent, quick and easy. It takes a little bit to get everything perfect on the initial set-up (I'm OCD), but once set, you're done. I've done thousands of rounds with mine and have yet to readjust.
I almost pulled the trigger in the Trim-it, but I'm glad I didn't. In theory, the changing collets for multiple calibers is a nice idea in theory, but in reality, I felt having to adjust the cutter head for chamfer, deburr, and depth for every caliber change would be a PIA!
Right now, I just grab my 556 dies and shell holders, setup my presses, chuck my Giraud up in a drill, and go to town. Takes about 2 to trim once you figure out a routine and keep up on the trimming. I also have heads for 308, 22-250, and 300 BLK.
As much as I like my Giraud heads and my RCBS manual trimmers, if I were to do it all over again, I think I would be better off to just go with the Henderson. Trimming off the shoulder works for me, but I feel you still run the risk of inconsistent case length compared to the large styles and the Henderson with the datum off the base of the case.
I'm not a match shooter, just a hunter, plinker, and occasional target shooter, so the Giraud gives me what I need. But I'm one that can't leave well enough alone, so I see a Henderson in my future.