If you can use a ball powder in your 308, a thrower is all you need, Redding, RCBS and Lyman are great with ball/ flake /short stick powders. As long as you stick to short stick tubular powders, they will work for that also, but you may wamt/need to throw short trickle the last bit.
I have a bit of a distrust of electronic scales, I find them finicky, moreso than I like. I do like them for weighing bullets, arrows and things like that.
There are some pretty high priced powder throwers out there , too. Whether they work ok with the longer sticks, I don't know.
I know I'd be torqued on an electronic gizmo that cost me 250-400.00 that krapped out in under 10 yrs. I've been looking, I haven't been able to justify the price of it yet, but, I'd go with the RCBS if I do.