Abu Bakr ibn Muhamwiyah al-Ahwazi: The most memorizing I have seen
Abu Abd Allah al-Hakim al-Naysaburi: Trustworthy, Reliable
Ahmad ibn Shuayb al-Nasa'i: Memorizer
Ibn Abi Hatim al-Razi: Truthful
Ibn Hajar al-'Asqalani: Trustworthy
Al-Dhahabi: The Hafez Muhaddith, he is the most memorizing I have seen
Abd al-Rahman ibn Muhammad ibn Mandeh al-Asbahani: He was one of the memorizers
Muslim ibn al-Qasim al-Andalusi: Trustworthy, Memorizer