I strongly recommend an essentially literal translation. The KJV, NASB, NKJV, ESV and RSV are all good choices. Clearly, a modern reader may have trouble with the outdated language of the KJV, but it you like it, it is a solid translation. If you can find a 1973 or 1984 version of the NIV it is acceptable, especially for those new to reading scripture. Stay away from current versions of the NIV. Stay away from paraphrase translations for your primary bible as they are as much of a commentary as they are a translation.