Interesting discussion. I had to take one of my snakes to the vet this week (SEAVS in Fairfax, VA) and got grilled on my husbandry practices. They very strongly recommend f/t over live, as they see quite a few snakes badly hurt by live feeders (probably by folks who don't read this site!). They haven't seen a snake that had to be treated because it ate a f/t feeder that was still cold in the middle. Of course, that may also mean the snake didn't survive - hence no vet visit - but take it for what you will.
I have no problem feeding live, but prefer f/t as life gets hectic with running two home-based businesses. I do worry at some point I will get distracted by a phone call, unexpected customer, child, etc. with a live feeder in a tub. If I could be assured of having several hours where I wasn't interrupted it would be different.