According to my experiences, I've never encountered any playback issues with 4460MB via DVD Shrink. However, I must say that I only use genuine Taiyo Yuden, Verbatim and Maxell (Made In Japan by Hitachi Corp.). I've been burning over hundreds and hundreds (thousand) with 4460MB and so far they all worked flawlessly. Yes, it is true that to be on the safe side, you may custom your size to 4300MB - 4360MB via DVD Shrink if you're using other inferior media (3rd class or crap media), but with top notch media like TY, Verbs. and Maxell (MIJ), you shouldn't have/need to worry about it. Good luck to all and happy burning.
