I use single stage presses, and use an RCBS thrower for pistol loads or to speed up the process on rifle loads if I am using my old 5-10 scales. The thrower does a fine job for the pistol loading without having to weigh every load unless you are working close to maximum. Even with the pistol loading, I weigh every tenth load on scales.
Using the older scales is quite a bit slower than the new electronic sets, and it is very useful to throw a short charge with the thrower and finish off with a powder trickler.