I've fed live before. It was more interesting and "easier" than f/t, but sometimes I don't have the right sizes available cause they grow so fast. Also, when the snakes are in shed and I want to feed them, they tend to miss really bad. So even though I watch them, it still increased the chances of a bite by a lot. I did pre-killed for a long time. It was easy because they are already as hot as they should be. But then there was the same problem with the mice growing too fast. I now feed f/t. This way I can pick out all the mice I need for my snakes, then leave the rest to sell to people. That way I for sure have enough food. Pre-killed is the easiest in my opinion though. But it wouldn't be worth it for you to spend the extra money to buy live, then have to kill it anyways.