I picked up the RCBS powder combo last year and have been very happy with it. Have to admit I'm still a little anal and double check random loads on a mechanical scale, especially when I'm loading max loads for my .300 Wthby. the only small problem I've noticed is that after loading the powder in the hopper, the first 3 or 4 loads the combo throws are not accurate (mostly under) but after that they all range within a fraction of a grain. It's a good idea to wipe the powder silo etc. with an anti static cloth to keep the powder from sticking. Loading isn't as fast as with a progressive, but the combo sure simplifies the process.