What would you use as your main console

[Dodece]

Two words for you backwards compatibility. Use the console that has a greater potential for honoring that promise. Sony has seemingly abandoned the concept this generation with no ill effect. Further more their hardware is not the standard, and regardless of any consoles current drives. Most will be physically capable of playing older media formats reliably. There is a serious question as to whether their next console will support their current consoles games. Especially since they probably do not feel that they must do this anymore.

Nintendo is not much better while the hardware was cheaper, and should be able to duplicate cheaply in their next console their nuance of design could be a killer. Nintendo has not been very loyal to the principle in the past, and you could very well find yourself in the next generation with a console that may be physically capable of running titles from the previous two generations. The console may need to support three different control schemes, and a mountain of peripherals. There is a safe bet that some hardware is not going to be supported, and if a game is best, or requires that hardware you may find yourself disappointed.

Microsoft supports the most standard technology which means the new technology should be in line with the older software. Microsoft has also done a rather decent job with software emulation which means the overwhelming majority of games should be playable on the next model. More to the point their consoles do have overlap.

Simple economics really when it comes time to move forward. You want the most consistent possibility of retaining your equity. Not only can you transfer over a library, but it increases the resale value of your old hardware, and your old software. Which is better then selling hardware and software at a significant loss, or being in the position where you must cover costs of reinvestment in old hardware. The greater chance of backward compatibility the farther your gaming dollar will go.

I would say the 360 is the safer bet of the three consoles. When the next generation comes. Investing in new hardware is a burden, but if you can sell off the old at a better price it does help greatly to defer costs.