I don't use any particular source; I use all of them. It was the discovery of the dead Sea Scrolls that "verified" many of the LXX deviations from the MT. I don't have the source handy, but it's the same one that carries Rahlf's.
Here are some facts about the Septuagint (LXX) that I have compiled:
a) the original does not exist
b) The oldest fragments (2nd c. BC) include Leviticus, deuteronomy and Minor Prophets
c) It is unknown how LXX came into existence; there is a legend about it being commissioned and that it was done in ecrod time; evidence shows it was more like two centuries.
d) there are numerous redactions, variations and copies, not all in concord with each other.
e) Oldest known copy of the OT (LXX) is Codex Sinaticus (4th c. AD)
f) the Orthodox Church does not differentiate between different versions g) Some sections are literal Greek (Ecclesiastes); others are periphrasic (Proverbs)
h) LXX Jeremiah is shorter by 1/8 than the MT; Job 1/6; Esther has 50% fewer verses the MT version
i) Exodus differs in many instances
j) Gen 4:7 is very different as compared to the MT
k) Syriac OT, based on Hebrew reatins the Michal/Michol/Melchol in Kings 2
l) There are over 2,000 typographical errors in various LXX copies
j) LXX agrees with DSS where the LXX differs from MT
k) LXX is quoted some 100 times in the New Testament; MT only six.
The Bible has been redacted, doctored, changed, shortened, re-worded, altered, falsified, mistranslated, etc. by men. We don't even agree as to what consitutes biblical canon; how can we even speak of "everything in the Bible?"
The Bible cannot be used as a reliable source of scientific knowledge. Placing trust in the Bible to explain the world's physical make-up would not cause one to know the world correctly. The Bible was not intended to be the encyclopedia of zoology, botany, astronomy, etc. but of spiritual revelation -- of morality, of our ancestral transgression, and of God's salvific work.
Those who mistook the Bible for an encyclopedia believed that the moon couldn't have craters, or that the heavens were the sky above (in fact in Slavonic the word for "sky" and "heaven" is one and the same); they believed the world to be flat; they believed the diseases are caused by demons; they believed lightening was God's anger, etc.
The Bible does not say the earth is round; it does not say lightening is what it is; it does not reveal anything we know of the world today. It reflects the knopwledge of the people who wrote it; not God's knowledge of the world. Most of its events cannot be corroborated; most of the people in it may or may not have existed. The Bible teaches what is good and what is evil, not how the world is. The "errors" of the Bible are human errors of; errors of mixing God's revelation with man's limited knowledge; using man's limited senses to conceive the Unlimited; using imperfect language to describe the Perfect. They are errors of transcribing, interpreting, memory loss, etc. What remains true in any version is God's spiritual message, His love and His glory. As I see it, it should be a source of spiritual wealth of God's word and used to edify us spiritually through it's message, not its "facts" about the world and history. Used for anything esle, it missess the mark.