I buy the 450 lumen bulbs from the FIRST robotics program, I really like the bulb and they use it as a fundraiser (and at $10 it is the same price or cheaper then the bulbs I can buy locally). They have 800+ lumen bulbs now but I find the 450 to be more then enough for most use cases as the light is directional. Good for pendant lights, porch lights, ceiling lights, etc. Not so good for omni-directional needs like table lamps. Have one that is on my porch ceiling (10') and does a decent job of lighting my 10x30' porch and part of my yard thanks to the directional nature.