As to which version of the KJV is a little misleading. The changes made from one KJV to the next are spelling changes, changing the archaic "F" to an "S", etc. No textual changes were made. Compare a Tyndale bible to the KJV and you will find very few dissimilarities, because both Bibles use the same underlying manuscripts. It was the publishing of the Tyndale Bible that began the Reformation in the 1500's. Inspiration and preservation are two parts of a whole. Either one is useless without the other. Since the KJV is an accurate translation of the correct manuscripts, it is reliable in every aspect. I hope this helps. Are you leaning towards another version?