Totally get that. Oak gives you a longer, steadier burn than something like hickory, which can be a bit sharp sometimes. It just wraps the beef in that deeper smoke flavor without getting bitter. I switched a while back and haven't looked at my fruitwood the same way for brisket since.
But what if hickory's sharp bite actually helps the bark stand out more, @blake_anderson? That kick can cut through the fat better than oak's steady smoke. Sometimes oak just doesn't bring enough flavor to really shine.