I feed live. I think F/T is good if you have a small colection..like one or two snakes to feed. You can keep some on hand in the freezer, rather than keeping them in a cage with bedding, food and water.
To me F/K would be better than F/T if you are worried about injury to your snake. You can always freeze it later if they don't eat.

I tell the ones I pick out to feed off, that they have won the lottery and they are going to "the island".