I’ve tested Unity 5 and haven’t been too impressed over the new features. The new graphics features aren’t really that great, you have a PBR shader, but since it’s Unity you can only use it the way they designed, with UE4 you can customize your materials however you want and make them more efficient. The new lighting system is also much much slower than the old one, sure you can have dynamic lights with it now, but it’s super slow to build the lighting. And they’ve hardly done anything to improve the UI.