Note: this review is of the translation, not of the content.
The King James Version (KJV) is one of the greatest translations out there. Sure, it sounds a bit old-fashioned (perhaps a bit too much like your grandparents), but there's a flow that you don't find with more contemporary translations like the NIV. In fact, I think the NIV might be overrated; I wish more people would pick up the KJV.
I've got the Amplified Bible kicking around, so I might pick that up and do a review in the next few weeks. Until then, I'd say stick with the KJV if you want a good reading experience.