I have after much consideration decided to separate our whole flat of the many 35 watt and 50 watt halogen lamps and even use GU10 LED bulbs. To begin times in a room I bought 10 pieces of ceramic versions. I'm very satisfied. The screwing is easy, but the bulbs securely holds. High I have nothing to complain about and I am satisfied, which is why I immediately ordered nor what the next two rooms.