Ladies: Stamina Or Size?

[canihavu]

if you had to chose ONLY ONE.. which would you prefer

a big/girthy dick on a guy who can't last long (and i mean at best you're getting a few minutes)
EDIT

or a guy whose dick size is below average but can last a long time.

[helmetvonzeplin]

big cocks that don't work are useless and frustrating

better the small penetrator then the useless perpetrator