I prefer Law and Order: SVU. Goren in Criminal Intent seemed to know "everything" and it just kind of takes away the fun ... Eames' one-liner annoys me and sometimes I wonder what she's doing in the show aside from hacking computers (even then she often needs Goren's help in password suggestions). Seriously, just once I would love to see someone outsmart Goren.
I like the story behind Law and Order: SVU more, I care more about the characters in that series, not to mention it seemed a bit more plausible.