I generally stick with the KJV because I grew up with it and feel that it has been around for a long time. However, I do also like to read the NIV version as a "second opinion". Not a second opinion to the KJV, but to my own interpretation of what I read. And since that Bible has study notes, I get a third opinion. So by myself, I can have a full Bible study like I was with a group.
I really do like to hear commentary on the various translations and interpretations, but I find, that almost any argument can be made and proven that way.