Usually people tought that the old version of Noob was already better than the H maker one.
But the V2 verison fron Noob is clearly better.
Read the PAM GUIDE you will find there some links about these replicas
And you will find a Puretime link with all special features of the V2, many of them are differences with the H maker version. "Reference PAM REVIEW-GUIDE" - Replica Search, Identification, Evaluation & Selection http://forum.replica-watch.info/vb/showthread.php/reference-pam-review-107365?t=107365
You will not find a concrete list of A, B, C, D, E ...differences.