I have bad landings from time to time. I find that a Cessna 310 is one where you are never immune to a bad landing. Even when you are getting the hang of it by flying a bunch of legs in a row, you'll still pound one on. The King Air 350 is one that nobody should be able to make a bad landing in. I've done that too. I guess if you do this every day as a career, you'll make your fair share of awful landings.