I think whatever fits your personal tastes, likes, and dislikes.
I do read the King James Version from time to time. I mostly do New Living Translation just for the simplicity, I haven't tried New King James Version yet...I want to.
The next Bible I may purchase is the Greek or Hebrew Bible with the English text also, just to see how much different it its.
My grandmother likes the Application Study Bibles, she just got a New International Version Study Bible because another she had gotten wasn't the version she preferred.