I've only used it once, right out of the box, but I love it! I've always been awful with boiling eggs and this is a wonderful cooker.. I don't use the stove much due to disability so this is perfect for countertop or a dorm and very safe. I made 5 eggs and filled water line up to 5 for hard boiled.. they were a bit underdone but I ate the first one and it was delicious and shell came off in 2 pieces! I let the others rest before opening and they were ready to make egg salad. I live at high altitude so mine might require longer cooking but I love this!