All of the modern day versions are based on corrupt texts. The KJV is the only english Bible that is not.
Again, read some of Gail Riplinger's work. I don't really care to get into a long debate over bible versions. I am King James only and will always be so. There are lots of problems with the newer versions.
God promised to preserve His Words. All of the bibles can't be His Word when they all say different things. I'm not just talking about minor, insignificant changes. I'm talking about major changes that affect doctrine and things like the deity of Christ.
All of the modern versions have also been heavily influenced by roman catholicism and that includes the so-called "New King James" Version.