If you feed F/T or freshly killed then it's definitely a no-brainer to feed in the same terrarium.
I feed live so I choose to feed my snakes in separate enclosures. Since all my snakes live in PVC enclosures, feeding them in different enclosures assures me that I can make sure that the BP makes a clean kill and isn't getting bit by the feeder rat. Additionally, rats defecate a whole lot when they run around. So if your snake doesn't make the kill right away, you now have rat feces and pee all over your terrarium. In regards to regurgitation, you want to wait about 10 minutes after they eat and then with both hand pick up the snake and put it back in it's home. I've been feeding 5 snakes in separate enclosures and never had one regurgitation. Also, I never had any of them bite me or even attempt to bite me when I'm transferring them to or from their feeding bin. The snakes know that once they're inside their feeding enclosures they're going to get fed and that's about it.
At the end of the day, find the best feeding method that works for you and your snake.