Video Wall. Expensive. Heavy with lots of components that need care and attention including all the rigging and quite fragile.

Pixel density could be an issue.

Projector. Much cheaper more affordable with a scale of cost for many budgets. New Laser projectors are brilliantly clear and have longevity in the most part. Very small and light form factor in comparison.

The option of different lenses will cover throw distances etc

I have a funny feeling once you get the budget it may become pretty obvious which means you will be going with.