Honestly, I've used neither. Did you use any of the official material to study CEH? If so, and if you've studied for OSCP, as well, I'd like to think you'll be fine. IMHO, the CEH exam was not that difficult, and I'd taken it solely from reviews of the courseware, and long before I did OSCP.
Apologies I can't recommend one versus the other, to you, from those choices.
~ hayabusa ~
"All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved." - Sun Tzu, 'The Art of War'
OSCE, OSCP , GPEN, C|EH