Look up Arne Jordly's Koine Greek to English translations with commentaries. I don't agree with everything 100% but it's worthwhile reading and very educational. He typically compares NWT NIV KJ to his own as well as the original Koine Greek works used. I think he relied on Strong's works to a degree to put all this together, quite impressive !
http://www.churchofgodandchrist.com/
His publications are a good starting point for me to further my Bible knowledge. I have his complete collection on order from the printers in NJ and he is pleasant to deal with. Has spent 25 years on this project so far and is not a sect or anything, his intentions are simply to help people get a better grasp of scripture without any organizational slant or agenda.