The recipes for absinthe, and thus the flavor, vary greatly from manufacturer to manufacturer, as was true at the turn of the century when there were over 200 absinthe producers. Today, there are not nearly so many, but more and more crop up every day! That said, a few of the modern Spanish brands seem to have the best hold on flavor.
Actually, that is very true. OS disks should ALWAYS be burned at the slowest speed to ensure the critical data is not corrupted from disk wobble (causes from high speed revolutions). I burn CD-ISO's at 4x and DVD-ISO's at 1x. And about 1x not being supported by any current drive..well..ot exactly true for DVDs, media rated for higher speeds don't like being burned at too low speeds, also you can't burn at 1x as that is not supported by any current drive, the lowest speed for DVD is 4x. You shouldn't be so concerned about speed, more important is the brand of the media you are burning on.
After debating which to use, they combined the two, which is why DVDs did not make it to America until 1997. Although similar to a CD (Compact Disc), DVDs are more densely packed with data and spin faster. DVDs hold seven times more information and spin three times faster than a CD. The rotational speed, or angular velocity, of a DVD goes between 570-1600 rpm (rotations per minute). The closer to the center of the disc, the faster it spins and which is why there is a range for the angular velocity and not one specific number. This means the read head passes the same length at all times and radii.