I'm a little confused about how read/write speeds work when specified on the disc's packaging. Pretty much every typical BD-RE disc has a "2x speed" as specified on their packaging. Is that solely the write speed or both the read/write speed? And if it's solely just the write speed being advertised, how do I determine the read speed? Is that entirely dependent on my Blu-ray drive? So for example, if a BD-RE disc shows 2x on its package for writing, does that mean it'll still be read at 6x speeds if that's the max speed of my drive?