Well honestly, Im going to have to say mids. With the mids, you will obviously have more quantity and a lot of first timers dont get high because they dont know how to inhale or take big enough hits, with the mids, you can make go through it with them until they get it right, and then you can pack out a bowl of dank, and let them each take a hit.

I totally agree with stoner420chick, that it should be a blunt, because bowls can be confusing for new people,
but with a blunt, its pretty much simple, put it to your mouth, inhale, pass it. Its common sense.