Kind of partial to Act II Butter Lovers popcorn, maybe a bag a week or every other.
I believe olive oil burns at a lower temp threshold than some other oils, may not be good for popcorn. Use olive oil to sautee in seafood dishes, found out if you set the heat too high, it will burn quick and stink up the house....ask me how I know.
Can't really recommend an oil, back in the day, Mom used to use Crisco lard to pop it over the stove, of course that and others led to my closed arteries later in life.