Probably depends on what you are using it for.Which map is better? This one or the 3.0 FR campaign setting guide one?
The one above gives you the "locations" of a lot of the adventures you can buy for 5E that don't actually exist in the Realms, so as a 5E resource it's useful to a lot of people and fun to look at. But the 3E map actually gives you all the small towns and villages and roads and landmarks that make for a more precise map from the "canon" of Faerunian history.
The 3E map (and the maps Mike Schley have done of the Sword Coast) feel more like Google maps of the true areas... where this 5E map feels like a Tourist's Map giving you just the big places to go see were you to arrive in town.