I prefer divx because it is easy to use (Dr divx 5.x is a good, clean application) , and it is supported on some stand-alone DVD players. (It's so good that I can't really tell the difference between it and DVD on a low-def TV) Xvid, although free, requires more tweaking, tends to produce noise from my experience, and sadly, no stand-alone DVD player on this earth (other than a computer) can play Xvid, as far as I know. B/c of this, i use Divx for all my video compression needs.
Post which codec you use the most, and why.
Post which codec you use the most, and why.