I build new house last year and all mostly used lights are LED.
With good insulation, even with 2 refrigerators our power company keeps sending me congratulation letters that my house draws 11% less energy than average energy-saving house in my area ( I think they have solars, while I do not).
I was buying LED directly from China using ebay.
Outdoor, waterproof 10W reflector cost less than $10 and prices keep on dropping.
One that comes with remote and can change colors per your program cost less than $20 and those sure are fun in my living room and in garden fountain.
I knew to get biggest LED lights I could for bathrooms, but even the 7W was not that much. In bigger bathrooms put 2 of them.
100W installed over kitchen countertops makes it a day at night.
I like the white spectrum, but this is personal choice.
Did not have good luck with E27 sized bulb replacement. The internal converters on them died in the matter of weeks.
Also replaced all internal bulbs in my camper. Whenever you can't find direct fit bulb, you can use LED panels with plug in adapters.
