A surge suppressor is an absolute necessity when you hook up a new computer. Spikes and surges occur constantly on your electrical supply, and these will often damage sensitive equipment, such as computer motherboards and hard drives. I think it is a good idea to get a more expensive model, becuase the cheaper less-than-ten-dollars offer will not offer adequate protection for your computer. The Belkin SurgeMaster surge suppressor comes with so much more. It has phone line protection - which many computers and modems are damaged due to surges coming through the phone wires. There are two "out" phone jacks so you can protect your computer and a phone or a fax machine at the same time. Rated at 1770 joules and 90, 000 spike amps, this model will protect your computer against massive surges. I feel especially safe knowing that when the protection runs out, power will be cut off to the outlets, ensuring damage cannot occur because surge protection is no longer working. It is heavy-duty and built to last, with a sturdy cord and plug. Comes with a guaranteed $150, 000 connected equipment warranty. While I spent a lot more money on a surge protector than I needed to, it ensures the protection I need will always be delivered.