Multi-Target vs Single-Target

I was just wondering In general if you were going to pick only one to focus on. Is multi-Target going to give the most DPS or help in raids on average compared to single target ?

I usually stick to single-target for raids, and multi-target for mythic+ as a rough general rule.

Certain fights in raids will prefer multi-target, but usually I just swap a few talents for those fights, and only optimize gear specifically for them if my team is having trouble.