This has been beat to death and you can search dozens of threads.
IMO If you have to ask, then FL size.
It is 100% reliable, proven to be accurate that is what you want. 90% plus of the BR shooters in both short and long range are FL sizing.
The key is they are using custom honed or dies that "match" their chambers and give them minimal sizing while still bumping the shoulders. All the dies are neck bushing dies also.
IF you try to NS only, you will screw up eventually and get a hard chamber, bolt lift and miss a shot at an animal or target.
So in a perfect world, a "matching" FL neck die gives you the most uniform fit with minimal sizing, the best reliability and least work on a case. The current World record for 1000 (5 shots in 1.4- inches with perfect 50 and 5x) was shot with cases that were FL sized 54 times the record was shot but with matching dies. It does not get any better than that and that settles the accuracy issue.
You can buy a body bump die, fire cases 3x and send to Jim Carstenson at JLC Precision and he will hone that die and convert it to FL bushing to perfectly match your chamber for under $100.