Depends on what you are after. If benchrest precision then it is a different answer than 'normal' or personal use. I am a casual paper puncher. My 6BR I use a Forster FL size die and a Redding competition seat die. I like the micrometer adjustment because I can save the settings for each bullet. Forster will hone the neck to your specs if you want. IIRC Hornady used to make custom size dies if you sent them several fired cases.

My .308 is mostly cast bullets. I use Lee dies for it and for my .223 barrel. I have modified the seat die to give more accurate results (much less runout). I also neck size most of the time and the Lee collet die is the best way to do that for me. The dies are good for 1/2MOA jacketed loads. I do have to admit I have a Redding competition seating die for the .308 when shooting the ELD bullets.

For ultimate precision check with others who complete. Wilson seating dies are probably high on their list. As are the bushing type FL size dies.