If you really want my advice, you should probably give 5th ed a chance. In fact, I also recommend Pathfinder as well, but 5th ed is simple and straightforward, while pathfinder is more supported at the moment and has a lot of customization options. (That being said, I played 5th ed in a convention game where we had 5 other players, and we were all given fighters, while most of us was doing their own different thing. You have a lot of wiggle room in that edition still).
Now, I do like 4th edition, because combat there was something I found fun, but I can't recommend it to start because:
1. You have too many options in combat. This is a thing that sounds good, but if people are not familiar with their characters, and outside of a few people I played 4th with, it seems the majority don't tend to be, then turns can drag on for a long time.
2. 4th ed seems to be knife edge balanced. This makes winging monsters and preparing for sessions take up more work unless you already have some GMing experience before, and even then, there's no easy in book method for making monsters or making sure what to keep in mind when you do.
3. Price and availability. 4th ed costs money, and 5th edition dnd has free starter stuff on wizards website, while pathfinder rules are available for free more or less, along with most of their classes due to the d20 licence. What's not fun is spending all that money and finding out it's just not for you, so this should give you a heads up.