I know that brining is the preferred method by trained professionals and Smokin'Okie has become a legend for his brining work in the bbq community and I do it a lot.
Also,I find that having all the "coonass" relatives down around New Iberia,LA who would inject a fried egg-if someone would hold it-has rubbed off on me after a few decades.
Neither is always the superior technique and sometimes time plays a part in the decision.