For me, I feed everyone inside their enclosures, except a pair of carpet pythons that live together for breeding.

Though both methods work fine and I've fed both in and out of the enclosure, I feed inside for one main reason: I'm lazy and don't want to take the time to move my snakes to feed them. By the time I get the F/T rats into the room, they ALL know that it's feeding day and are ready and waiting. If I tried to move my Macklot's to a different tub I'm sure that he would happily start to eat me instead.

In the end, do what works for you and don't go for any of the myths from either side. As long as your snake is eating and healthy you're doing a great job