Summary: I like that it tells how many watts are being used by the attached devices. That helped me determine how much electricity my computer is using so I don't overload my computer's 300 watt power supply with accessories. It handled the few short outages flawlessly and put my computer into hibernation just like it was supposed to. It comes with a 3 year warranty and I bought another 3 years from Walmart for a total of 6 years warranty.
Summary: I have a power hungry computer and the battery lasts around 25-40 mins depending on whether I'm playing a game or cruising the internet at the time of the outtage. The AVR works great, and the whole unit is very very quiet while running. No loud and noisy fan like some other models out there. My only qualm is that it doesn't protect your equipment from idiots who pull out your power cords.
Summary: I set this up with NUT on ubuntu, using the usbhid-ups driver, and it works perfectly. I have all of my servers plugged in to the UPS portion, listening to broadcast alerts from the server that is hooked up via the usb, and it shuts all down in a clean manner when the battery gets low. Upsc shows more information than you could ever want, so it can be set up for any number of configurations and power-off methods. It also works with ubuntu Desktop just by plugging it in!!
Summary: I bought this a little over 3 years ago from my local BB, and it just quit working a few days ago. There was no power outage, it was clear calm day, and I was just sitting at the desk using the computer and it shut off. I can turn it back on, and it will just shut right back off.
Pros: Good run time. I usually give it 5 minutes to see if the power is coming back on, then shut down, but the longest I ever let it run after a power outage was about 15 minutes. That was with an AMD 64 X2 4400+, 2GB RAM, 2HD's, GeForce GTX 260 and a 22" LCD.
Cons: It died a few months after the warranty expired.
Summary: During the last round of storms in Alabama a tree fell on my power line to the house breaking the ground only. Caused all kind of havac with the power in my house. Every light that was on blew, toaster, microwave and just about anything else I did not get unpluged in time. These units saved all my AV equipment as well as my pc's. The unit themselves smoked but everthing of importance attached to them survived.
Pros: Low cost, nice design, dependable, generous capacity for the cost.
Cons: It doesn't have an LCD display on the front like some of the other CyberPower batter backup units, despite the description. I almost returned it for this reason, but figured it wasn't worth the hassle, although I miss the display.
Summary: Fired right up, a big 1200 VA of power. Only problem is it said it supported serial port to talk to the monitor software, and even included a serial cable. I was out of USB ports, and had a spare serial. Spent 30 min trying to get the serial to work. Would not connect to the monitor software. Called help line and they said serial not supported. So 1. Why did they include a serial cable? 2. Why doesn't the doc say "serial not supported"? Otherwise, great.