I set up the Lyman last night. It does seem a bit fussy to clean out the first time you read the instructions, but once you do it it's pretty slick.
I ran both 2400 and then Red Dot through it. The charge weights checked against a balance beam and were within acceptable tolerances for me. Quite often the unit would throw a charge, hit the right weight, and then be a tenth of a grain short once complete, but these still checked out ok on the beam. I would verify every 5th charge or so.
Unit takes 3 minutes to warm up, and provides a countdown clock. The touch screen is a bit small, but serviceable, and it was dispensing charges fast enough that it was ready by the time I had seated the previous bullet, or about 10 - 12 seconds, I figure. These were all charges under 20 grains.
And the best part, for me, is the small footprint, since my space is at a premium.
130 or so rounds down and I'm happy with this dispenser at this point.