What LED display to choose is first of all a business decision, dependent on the usage of the screen, whether it's indoor or outdoor, the distance to the audiences....
Then the budget, to build a screen with amazing effect, a proper LED screen must be selected, otherwise a poor quality LED screen will induce adverse comment..
In the business world, every penny counts, those expensive products must have reasons for selling high, as a LED technician, we advise whenever you got quotes from bidders, ask them to list the product details:
pixel pitch in mm (mini-merter), this defines the resolution of the screen, the smaller the better and price higher, now the popular pitch for indoor use is < 3.0, with P2.6 being the main stream one, with evolution to P2.0 and lower
the quality
The quality depends on its material and workmanship
To achieve better quality screen, better quality LED lamps and driver chips are neccessary:
For SMD type LED lamps, tier 1 manufacturer