I'm a high volume user, so I went with a Giraud.

http://giraudtool.com/giraud-power-trimmer.html

Expensive, obviously, but insanely fast. It trims to length and chamfers inside and outside in one operation. I'm not exaggerating when I say it takes 2-3 SECONDS to trim a case. I did a run of 5,000 .223 cases a few months ago. Took me 5 hours with smoke breaks.