Well my friends you have sometimes I think to admit that the body of evidence suggests that the Qur'an has an un impeachable authority because it was accepted as Revelation by the believers from the beginning... So as much as many wish it were not so..it is.
You know if you understand the history of early Islam and it's rapid spread and the developement of Arabic... that variations in monumental inscriptions and coinage are not in and of themselves convincing evidence of variations in the text of Qur'an.
Arabic was in itself in transition as a written language.
The evidence I've seen is that Qur'an was collected and referred to as "Qur'an" during the lifetime of the Prophet:
"Those to whom We have sent the Book study it as it should be studied..."
Surih 2:121
This means that there was a collection of the Revelation of Qur'an during the Prophet's lifetime and that it was recited and an admonition that it be studied.
Also consider what I wrote earlier about Ali the cousin and son-in-law of Prophet Muhammad who was with Him from the earliest Revelation and who accepted the Uthmani standardized Qur'an later in his life and as Caliph himself after Uthman died:
"Mu'awiyah raised an army and marched against Ali, demanding vengeance for the death of Uthman. A prolonged battle took place in July 657 CE in the Battle of Siffin, near the Euphrates; the battle seemed to be turning in favor of Ali, when a number of the opposing army, fixing copies of the Qur'an to the points of their spears, exclaimed that "the matter ought to be settled by reference to this book, which forbids Muslims to shed each other's blood."
Source:
http://en.wikipedia.org/wiki/Ali#Caliphate
This is a very well known incident so Ali himself accepted the Uthmani standardization.
Here are additional sources...and I think the soource of this merits attention also:
The Codex of 'Ali (A): The first person to start the collection of the Qur'an after the demise of the Prophet (S) was 'Ali ibn Abi Talib (A). He did so in accordance with the instructions and testament of the Prophet (S). [33] He arranged the verses chronologically and mentioned their context and place of revelation.
Ibn al-Nadim writes: "After the demise of the Prophet (S) 'Ali (A) vowed not to leave his home until he had collected the Qur'an. He remained at home for three days and collected the Qur'an. He was the first one to have compiled the Qur'an from memory; this compilation remained in the custody of the family of Ja'far". [34]
It is inferred from the observations of Ibn al-Nadim that 'Ali (A) had already memorized the Qur'an before the demise of the Prophet (S) and after his (S) demise he retrieved it from his memory and compiled it. Perhaps he had already written parts of it, because even a highly skilled scribe cannot write the entire Qur'an in three days from memory or copy it from another copy. Since there is no evidence that 'Ali (A) copied the Qur'an from another copy, it follows that he had previously written the Qur'an as and when it was revealed in that order, and since the Prophet (S) was aware of 'Ali's (A) work and his writing of the Qur'an, he (S) instructed him (A) to collect and compile the same, so that it was safeguarded from destruction and tahrif like the revealed scriptures of the past.
Source:
http://www.quran.org.uk/articles/ieb_quran_manuscripts2.htm
As I pointed out earlier the developement of the New Testament is quite a different matter entirely and is really not comparable to the process that occurred with the Qur'an.
Peace and blessings of the Almighty God be with you all...
- Art