It's inexpensive, hasn't caught fire, and has protected our equipment so far. Sometimes turning a space heater on or off will cause my television to blank out for a second. Both are plugged in to the UPS.[NEW EDIT 3/2012] I've had this over a year now, and recently a power fluctuation caused the lights to flicker, but it caused my computer to shut down. The UPS should have handled this flicker without powering down the computer. Lowing review from three to two stars.