Quoted from DeeGor:5e has some interesting changes. I really like the advantage / disadvantage concepts as well as toning down the amount of time you're in combat. I've played in a few Pathfinder adventures, and it could get grueling if it was a high combat type adventure. You'd spend your entire night fighting rather than making any progress in the game.
I love 5e. It just feels so streamlined and clean compared to 4, which was too combat heavy for my taste. 5e is generally more approachable for modern tastes. I am fortunate to be in a group that likes Roleplay much more than combat. It is really boring to spend your whole night in combat alongside players who have min/maxed for combat, while my character is optimized for Roleplay and actually being, ya know, interesting. D&D is a Roleplay game with a small combat component.