My preference is the NKJV, although I picked up a "Couple's Devotional" Bible at the local Goodwill store, and it is NIV. So, I do read the devotional from it every day, and then I follow its "Read the Bible in a Year" outline in the back every day, reading the prescribed passages from the NIV. However, I then go back to the NKJV for my other, daily readings. The NIV is easier to read, for certain, but there is something about the "sound" (in my mind) of the NKJV that helps remind me of the absolute MAJESTY of our Almighty God! Not that it really matters to HIM, of course, but it does keep me properly oriented!