SSDs are superior in nearly every way to a standard platter-type hard disk.
Alas, they are still not available in very large capacities at anything like reasonable cost so for most of us standard drives are still a necessity.
Eventually though when the cost comes down SSD drives will be in all laptops. They are just so much better. Faster, cooler, quieter, longer lifespan..etc etc I would get one now but anything over 250 GB which I really need is just too expensive..