LEDs are by far the smartest choice for energy efficiency. I had two bright white LED bulbs that worked great, but my electrician son recommended I switch to a warmer light in my tiny, scary dark pit in the guest bathroom - switching to a warmer 2700K bulb transformed the space! I am very happy with the warm light!
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review
Smart bulb Yandex with Alice, base E27, 8 W, RGB color
76 Review
Lamp LED Xiaomi Mi Smart LED Bulb Essential (MJDPL01YL), E27, 9 W, 6500 K
113 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review