There are lots of things to consider in a notebook. Gaming? Size and Weight? Battery life? durable?
Myself I love power and big screens. The last 3 laptops i bought had 20.1", 18.4" and 18.4" screens. They were powerful with discrete graphics cards and the last one with SLI graphics. So my least consideration is battery life and weight. I like big hard drives or SSD's and fast wireless.
My current laptop will allow up to 4 drives if I replace the optical drive with a HD or SSD. It came with a 256 GB MSATA SSD and a 1 tb Hd with 1 slot open.
My last laptop came with a 750 gb HD. I cloned it to a 240 GB SSD and move it to the the 2nd drive bay. i also added 8 gb of to go from 8 to 16 GB.