The Dillon is a very nice press and I believe it is capable of very consistent output. I only load volume on it though.
For precision work, I would suggest a quality single stage as it can reduce flex to virtually zero, and will give maximum consistency when that is paramount.
I have the Redding Big Boss II, and I love it. I have an inline fabrication auto eject system on it and I can produce ammo quite fast if I have need, or slow it way down and take maximum care for precision. ( For me that is Hunting Grade, not competition grade. )
I keep trying to convince myself I should "upgrade" to a T7 or the Co-Ax but for the life of me I cannot do it.
Which, if you knew me better, you'd know is saying something since I can rationalize UN-needed purchases with the best of 'em.