Thought I would post this for those that might be curious. Let me start by saying I am not an authority on these scales, I am just relating my experience. I am sure there are others that may have had great luck, but this is my post on my experience. I purchased a Lyman DPS III, which supposedly had some of the bugs worked out from older models problems. I got it home and carefully followed the set-up instructions, which included a grueling 30 minute start up time (each time it is turned on). I loaded my pet load for my 243 Ack Imp and took them out the next day. The loads, which normally shoot sub 1/4", suddenly were shooting close to 3/4". A few across the chrono showed a great drop in velocity. Later, at home, I dispensed the pet load and put it on my 10-10 balance (which had been used to get the original load). I had to run the Lyman up to 48.5 gns to get a load that would balance at 46.0 on the 10-10. I re-calibrated the scale twice, per the manual's instructions, which changed nothing. I took the new 2.5gn higher load out and was suddenly back to my sub 1/4" groups. Now I was questioning the accuracy of which scale ? Then, several days later, while loading some ammo for a friends 30-06, the scale began dispensing and you could watch powder coming out at a much greater rate than the digital read out was increasing. It finally got the the supposed charge weight and stopped. It was obvious just by looking that there was WAY too much powder, about 60gns too much powder to be exact. I attempted to calibrate the scale again, per the manual, and now began getting error messages which prevented me from calibrating. Next, I anxiously checked my Sportsmans Warehouse receipt, which showed I had two days left on my 30 day return policy. The nice folks at Sportsmans allowed me to exchange the Lyman towards the RCBS chargemaster ($70 more). I got the RCBS home, set it up per the instructions and was delighted to find that you could turn it on and use it within a minute, compared to 30 for the the Lyman. I was also excited to find that my 46.0gn load, thrown by the chargemaster, balanced my 10-10 scale perfectly ten out of ten times. I have been using it for a couple weeks now and am very happy. Again, not scientific, but my experience.