While the links are good for someone who doesn't want to fiddle around with hardware, I have to advise not getting pre-builds or "gaming" laptops. This is from personal experience.
Pre-builds usually have poor quality or performing hardware, especially the GPU (graphic card). The R7 260x will not be able to run Battlefield 4 at 1080p and at high settings with smooth frame rates (but medium settings or at 720p with high settings will run decently).
With the laptops, unless you're frequently on the move, the performance to price ratio is very bad. Even with the high end mobile GPUs (eg. GTX 980M), it will barely outperform a lower level card for desktop PCs (the gtx 970 beats it considerably).
If you want an affordable and proper PC with gaming in mind, I highly recommend using
PC Part Picker. They include pre-made parts list for a specific budget and you can even customize your build to the specific parts you want.
Examples:
With the
Entry Level Gaming Build at $565, you'll be looking with at least double the graphical performance versus the Photon ($500) mentioned earlier. The i3 CPU also performs much better than the Athlon 760K. Even if the i3 CPU has 2 physical cores, it has Hyper Threading so it will run like a quad core CPU. Considering you're only paying around $100 more, the performance is well worth the extra $$$ and the PC will last you considerably longer.
With a gaming laptop, you're looking at double the price versus a gaming desktop with similar performance (a bit less if the laptops are refurbished). I can only recommend a laptop if you travel frequently or just want a low profile computer.
Hope this helps.
Cheers