....if cost is a concern, just go SB/FL to avoid any potential chambering issues. It has "been" recommended over the years that for auto-loading platforms to use SB/FL, or at least FL sizing dies due the variations in manufacturing processes. Todays technology/tooling has mitigated some of that variance.
...if cost isn't a concern, go with what you feel.
...one consideration regardless if FL, SB or SB/FL is shoulder bump and how much control you will have over that if you are looking for "precision" oriented loading.