Can you imagine how many hours it takes to change LED lights bulbs? Not much as it is an easy process. First: Hold the led bulbs, and Second: spin the ladder.
Among the pin bases, the GU10 bulb is the leader and the most commonly used base. There are actually 2 small circular knobs with a 10 mm distance between both the knobs.
The E26 is the most common LED bulb base type; however, E12 or E11 c andelabra bulb bases are also fairly used. The mogul E39 and intermediate E17 sizes are more rare.
The most common or standard bulb base that is used all over the US is E26 screw-type base. There are the best you can get, and it is good to have them in stock.
While the general incandescent and CFL bulbs are slowly being replaced, the Edison screw-type base LED light bulbs are here to stay for a bright future.