Get a beam balance, you can't go wrong with them and they cost lest than electronics.

I recently bought a cheap electronic balance ($29), it reads within 0.2gr which is good enough for quality checking while reloading for rifles, culling brass, or culling cast bullets. I works very well and greatly speeds some things up, but I wouldn't want to rely on it as my sole measure for weighing.

I normally set up my powder thrower using my beam balance, and randomly check my charges using the electronic balance.