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I've had this Lyman Gen 5 for a few months now. I originally wasn't sure whether I'd get the RCBS Chargemaster 1500 or this Lyman unit, since I couldn't justify the additional $100 for the RCBS unit, I chose this one. Setup is pretty straightforward with all calibration and setting changes explained step by step in the included manual. I usually allow the unit to warm up for 3 minutes upon turning it on and calibrate it with the 50g weight every time it's used. I haven't used that many variations of types of powders besides flake powders, but seems to work well and I haven't had too much of an issue with the dispensing. Since the accuracy is rated at ±0.1 grains, I sometimes get powders dispensed -0.1 under and rarely +0.1 over the input dispense weight, but isn't an issue for me just to re-pour the powder into the reservoir and re-auto dispense. I think other factors causing this might be air circulation around my workplace, how sturdy my reloading bench is where this unit is sat, and the type of powder(s) I am using. So far it is serving me well, and I hope it continues to do so for at least several more years.