Quoted from hawkmoon:This is another personal preference to be sure,But,LEDs give brighter color,lots less heat,less energy,Like having a old VDub with the 6 volt system,as opposed to a 12v system!! No brainer!!
In home use heat and energy use just aren't a consideration.
I would never use them on a playfield. I do have them under inserts in one game. Its almost game by game but in the main, I don't really like them in EMs. But they are reversible