I have the Kenmore elite front loader. Overall, I like it. It has the steam treat and steam sanitize cycles, a soak cycle, a clean washer cycle, etc. I do find that my boys clothes get super clean if I add oxyclean and use the "kids cycle" option, however, that cycle takes almost 2 hours!! I find it mildly irritating that I have to keep the door cracked and the detergent drawer open (open cabinets drive me nuts and it's kind of the same thing). I always do that b/c I had heard of the mildew problems with US front loaders. If I had answered this a few weeks ago, I would have answered no mildew problems whatsoever. But just in the past few weeks I am noticing a mildew smell around the gasket of the door- not inside the washer itself- and clothes are fine so far. I guess I need to try to peel it back and wipe it out with bleach or something. I did the "clean washer" cycle twice with bleach but it did not take care of it.
ETA: I've had the machine almost exactly 3 years.