Pros: None so far

Cons: The 1000B has two models: a 110V input model and a 220V input model. The unit does NOT autosense the input voltage.

Other Thoughts: I live outside the US and power elsewhere in the world is not as reliable or steady as in the states. Having a unit that is multi-standard, as OPTI-PLUS documentation implies, is necessary for those who live outside the US (Military, business, etc.)
OPti-Pluss should market the two different models accordingly instead of under the single model name.

Pros: reliability, noise is not anywhere near as bad as the other two ratings suggest. I sleep right next to one of them, and can barely hear it!!!!

Cons: Software sucks but you don't have to load it!!!!!!!!!It works fine without it!!! I have a PC Power and Cooling 850watt power supply,Intel 2.93 XTREME core 2 duo over clocked to 3.70, two 150gig raptors, water cooling, 6 Silverstone adjust. 120mm 10 blade fans and it only shows like 44% usage!!! I love these things!! Plus it keeps output voltage to +- 2%!!! Better than any other!!!!!!!!

Other Thoughts: I have two and am getting ready to buy more.....they are far better than APC in my opinion.

Pros: True "Online" UPS, with zero switching time to inverter output.

The ability to manually select modes (constantly powered inverter, "high efficiency" mode which uses a fast-relay like cheaper UPS's, tolerances for input frequency and voltage).

Cons: Only 700 watts.

Only 1000 volt-amperes of reserve capacity.

Drivers use a Java based browser interface, which is horrible to configure.

The Java based browser interface does not give the option to select different modes of operation (online, high-efficiency "Automatic Voltage Regulation [AVR]).

*Dude*. The fan is pretty loud. It's no "Delta" 80mm fan at 90 decibels, rattling the fillings in your teeth, but it's definately loud (I would guess 50db at 8 inches). The fan is load-controlled, rather than temperature controlled. I am considering cracking the thing open and replacing it with an Enermax temp-controlled fan (the drivers report 27C temps, and the exhaust fan air feels very cool -- there's no way the windings are temperature stressed).

The inability to log load levels. I have little use for logging output voltage, since it's pegged at 119-120v. However, I would very much like to log the load levels to see maximums and minimums.

Other Thoughts: My UPS has a faulty "enter" button on the unit. I am unable to manually select between modes of operation. This doesn't bother me all that much because I bought the thing for it's constantly powered inverter ability, but still -- it would be nice to have that ability since it's _designed_ to have that ability. I'm not motivated enough to return it since it's completely working for me in every other regard, so such is life.

Pros: Excellent products but with wrong description. It is 1000VA 700W.

Cons: I thought 1500VA w/1050W. When i recieved it, I found out it was 1000VA 700W from the manual. It is too heavy to do the replacement so i keep it.