Re: accurate and reliable digital powder scale
I've been very pleased with my $20 (shipped) AWS Gemini-20 off of ebay.
It has resolution down to .02 grain, holds a great zero, and is highly repeatable.
Only downsides are it doesn't like fresh new batteries, and the pan is a bit small.
I ended up making a new, larger pan by hammer forming one from a $5 piece of .010" thick brass sheet metal from the hardware store.