Of course, if your TV station messes up the tape they are playing the Simpsons from, then it doesn't matter what quality you capture in. I've had that happen - capture an episode and when I go to edit it I find all sorts of garbled tape mess from the station.
My entire collection is comprised of only divx and vcd and the result is very good. Remember it is a cartoon. I bet you wouldn't notice the difference enough to deter from the entertainment of the show.
My simpsons collection takes up about 90 cds currently... I need a dvd writer...
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