I have had my Pact Electronic dispenser and scale for about 4 years. And I have had no complaints.I leave my scale plugged in all the time and calibrate it a few times a year.
Here are some pix of the system I have worked up for speeding things up. It takes about 10 seconds to dump 90 grains.I press the dispense button and once it starts dispensing I dump roughly 50-80% of the charge.And the trickler finishes it off.If your trickling under 30 grains it doesn't speed up the operation much.
I wouldn't hesitate to reccomend this dispenser.
My brother-in-law has the Lyman one piece and it works good, but it's really too soon to tell how long it will last.
P.S save your money and don't buy the RCBS, your paying a lot of money for green paint.
I thought I would throw in 4 of my favorite cartridges
from left to right,7MMRUM,7MMWSM,260AI,6MMBR.