It often comes down to which standardized text people like behind the Bible, and there are three major ones, but more than that, it has to do with interpretation traditions and traditions in how to translate.
I prefer the old RSV myself for basic reading.
It corrects some of the language archaicness of Early Modern English, while avoiding some of the translation pitfalls of equivalence and the desire for inclusive language that most translators can't resist any more...but for those who don't know much about translations, you cannot avoid some equivalence translating...and there ARE traditions in how a word, phrase or idiom ought to be translated. And those fights can get really interesting to watch from the sidelines.
I have studied huge amounts of Early Modern English texts, and although I like the beauty of some of the KJV passages, I won't study it because I KNOW how much the language has shifted in ways most other people don't (or pretend they don't)
Appreciate your information! I like the RSV best, myself.