Console or PC which is right for me??

PC games will have better graphics. There is a constant cycle of new hardware coming out. For example, the Radeon HD 8000 series is expected to be released at the end of 2012 or the beginning of 2013.

The controller depends on each individual's preference. I don't like controllers because I find they are too limiting. Keyboard and mouse offers more options for different actions and I find using a mouse to be more accurate.

"Future proof" is a relative term. But a console will be more "future proof" than the PC because the hardware will always remain the same for the life of the console. Therefore, developers can only push the performance envelop so much. If you bought your Xbox 360 back in 2005, it should be able to play games just as well as any other Xbox 360 for a game that will be released next year. On the other hand if you built a PC back in 2005 and have upgraded nothing since then you will find that if you tried to play a recent game or a 2014 game, you will likely be disappointed. That's because of new tech coming out all the time which allows developers to push up graphic effects, physics effects and complex game AI (artificial intelligence) amongst other things.

I don't play MMOs, but 30GB of bandwidth per month should be fine for online gaming. I really can't see it being more than 2GB of data even if you were to play 24/7 for the entire month. But you should wait for a MMO player to chime in about that.

I would say a $1,300 PC would easily beat a PS4 or Xbox 720. However, as mentioned above, new hardware is always coming out and developers will always push the performance envelop for PC games. Eventually, your PC will be too slow for newer games. There's a reason why Crysis 1 was not released for consoles. It even brought high end ($2,000) PC to it's knees when it was released. Metro 2033 is even more demanding than Crysis. In the long run playing console games will cost you less because you never have to worry about hardware upgrades because there aren't any.