<p>Sorry for the lack of clarity. Here is my simple take:</p>
<ol>
<li>In the granulated white (cristal) sugar, one should find the sublest of differences between cane or beet sugar.
2 Brown sugar exist in both cane and beet form, and the differences will be more noticeable with more “exotic” overtones coming from the cane version (think cinnamon) and perhaps a more “burnt” or robust aftertaste from the dark beet sugar. </li>
<li>There are slightly different products that are less refined. Some sugars from Brazil take this form.</li>
</ol>
<p>All in all, I think that white sugar is white sugar. The differences in taste and flavor might be more apparent in the darker as the processing might include different compositions of molasses or juices. Perhaps more along the lines of what happens with the torrefaction of coffees. </p>