What about the masoretic texts? I believe those were written in Hebrew. These were copied by the masoretes(they lived 300-700 years before the Septuagint would of been translated)They used a complex set of notes called Masorah. I'm not a Hebrew or Greek scholar, but I know for fact that there are different hebrew words for "God" and they all carry different meanings.(that is just one example (yes you are right, i dont know everything about translating, but you must since you called me on it, so feel free to correct me whenver you see me misquoting my greek or hebrew" Also, through the years of writing the BIble, I dont suppose that their language might change some? Becuase I know that English is the only constant language. (sarcasm)
Yes, im sure they are both well supported. But something well supported doesnt necesarily make it true (im not saying that those theories are not true)