Help buying laptop (Canada)

that will be much faster for example:
http://www.amazon.ca/HP-Pavilion-G6-2090ca-15-6-Inch-Notebook/dp/B008EDXVH4/ref=sr_1_1?s=electronics&ie=UTF8&qid=1346942492&sr=1-1
That one looks nice, but does not having 7200rpm matter? I don't need much disc space so should I try to get SSD?