Isn't the whole purpose of this tool to help a person not pay attention? This is exactly why I like the automated beam type scale. You're still looking at it and verify the needle in a very analog fashion, but it's just a lot less fussy because it's hands free.
But, everyone has their own comfort level with reloading so go for what will fit with your particular style.
I'd keep fluorescent lighting away from it and other sources of radiation.