Hi Lapua40X,
I have had the FART

(Frankford Arsenal Rotary Tumbler) for nearly two years, I have tumbled thousands of cases (I shoot F-Class) and I am very pleases with it. The only negative thing I can say is that the timer doesn't work properly.
When it gets near zero it just gets stuck and doesn't turn off. The easy fix is to turn on the timer on my phone as a reminder.
The thing that jumps out at me just from looking at the Lyman is that there is only one entry port. The FART opens at both ends and that is very useful if you decide to rinse the brass (of soap and Lemishne) while still in the tumbler container by running water from one end through the other. It also cuts down the wear and tear on the rubber sealing gaskets by half. The FART has see through plastic lids. Very useful on those nights that you cant fall at sleep

. The other thing that seems missing is the strainer grills that enable me to dump the water and pins while holding back the brass. Without it, when you dump the water the pins and brass will follow, that means you have to separate the brass and pins in some other way.
The FART price seems cheaper also, so the choice seems obvious to me. YMMV.
Joe
View attachment 1017459