1 Corinthians 2:13 Which things also we speak, not in the words which man's wisdom teacheth, but which the Holy Ghost teacheth; comparing spiritual things with spiritual.

You would be better off comparing things within the Bible itself, precept upon precept - rather than running to other corrupted versions to try to help you understand the KJV (or whatever other version someone prefers).

Doing Bible study out of multiple modern versions is never going to give you a greater understanding of the Bible, but will in fact give you a lowest common denominator approach to the Bible (ie. eventually you will start throwing out specifics and stick with generalities - whatever they all have in common; however, where they differ will be discarded).