It depends what you need it for. Since we're barely over the $1 per GB on SSDs, they aren't practical if you are going to be doing heavy, intensive work (like video editing). Also, the SSD chips <B>can</b> and <b>will</b> die after so many reads/writes. Now SSDs are almost guaranteed to give you optimal performance for more than 4 years, but they still have the ability to break after heavy usage.<br /><br />HDDs definitely aren't known for reliability, but you get much more storage per dollar. This kind of drive would be ideal for video editors, heavy gamers (because of storage space), image editors, people who rely on virtual machines, etc.<br /><Br />Basically, SSDs don't use as much power, are faster, generally more reliable, and more durable than an HDD. However, HDDs are better for content creators, and budget minded consumers.<br /><br />There is a technology that's becoming more popular, and it's hybrid drives. I know that Seagate makes one, and it has 8 GB of SSD caching, but is attached to a 750 GB HDD. This would be practical for people who want a lot of the speed of an SSD, but want the storage capabilities of an HDD.