Had the same problem with 1655 and BCHB.
MCC004 "made in India" only burn 4x.
MCC004 "made in Taiwan" burn fullspeed.
SB, WOPC both standard settings.
"made in India", when burnded, also leave an entry in the Solidburn database for learned media, "made in Taiwan" don't.
Qualityscores for "made in Taiwan" are better, at least with the media i get here in Germany.