Jazakallah Brothers.
Brother Unite they can't imagine how one can memorize Quran by heart because I guess it is hardly possible to imagine one who could memorize Bible by heart.
Second point I saw here that they claim that the most ancient Quran is back to 200 years after prophet's dead. I don't recall where did I read it but I can say one thing this is strait lie. The most ancient Uthmanic copy which is called "Imam copy" because it belongth only to Uthman(r.a.) is in my country He was reading this Quran when he was assasinated and therefore there is blood on the pages. If anyone donot believe visit my country it is in the museum.
Peace out