Now i have a question what is the most you will be going to end up doing
1. Movies
2. Gaming
If you are going for mostly gaming go for Logitech g430 7.1
If you want it for movies you can go for m30x but in that case i would suggest you to go for m40x coz it is more of a natural headphones with proper amount of everything and also it has 90 degree movable head where as it is only 15 degree in case of m30x.
Both activities are about the same. 2-3 hrs of gaming 2-3 hrs of movies. will do some research on the ones you mentioned.
if so is the case my advice is to get m40x.