Which editing software is right for me?

[satans worm]

Ok, so I just bought the EOS 6 d yesterday which is now busy recharging it's battery, so I'm looking at the software that came bundled with it, Lightroom and ps elements
Being a bit of an apple boy the hardware it will be used with is iMac, iPhone, iPad.
I only want to make the effort to learn one system, which should it be? Lightroom 5, PS, PS elements 12 or aperture?
Would it be possible for someone to list each ones disadvantageous so I can see if one is missing something I think I would like/ use
I'm currently thinking aperture as I assume it will work with my apple set up better?

[satans worm]

Thanks for the replies, I guess having lr already does make it an easier choice, so will go down that route.
Will check that tutorial out as there was no beginners guide with the software, and being an old dog new tricks come hard :-)