I've owned and used a few different trimmers. The Lyman was not very consistent. The finished length varied with the RCBS and Forster that used collets depending on how tight you tightened the collet. The Lee case gauge type worked ok but the cutters dull quickly. The shell holders can loosen and let the case get out much too often too.
I've settled on the Wilson and the Giraud. The Wilson has all of the bells and whistles that Sinclair offers. I find it to be no slower than any other hand powered lathe style trimmer once you get used to it. The Giraud is set up in the calibers that I load in volume. I can trim 223's at a sustained rate of 16 per minute and maintain less than .001 in length. Both are rather pricey!
