there are pros and cons of both technologies.
the pros of microled are that it can get brighter than oled, no screen burn-in, and no reflection i think.
the cons of microled compares to oled is that can get very expensive but price seems to be starting to falling down significantly i think. so far the seam of smaller modular connected together to make one big screen tv is still visible. and lastly, so far i think, microleds are mostly only available in very large screen tvs. they still haven't shrunk the leds down small enough to connect them in 4k in screen smaller than like 100" or smaller than that. so for now, most microled tvs will be in 100"+ in 4k screens. that might change in a few years from now i think where it will be available in sizes smaller than 100".