I agree with Wolfshadw the HP from BestBuy with ATI discrete graphics
will be best choice out of all three for casual games like Minecraft. I also would get the warranty it will be worth it. I owned 3 gaming laptops (Toshiba Qosmio, Azus G2) from 3 generations, they were top at the time I bought them and run great, each of them died after 2 years of heavy use
it all depends how much you will use your laptop, now I wish I had extended warranty.