APC SMT1000 1000 VA 670 Watts 8 Outlets UPS

Pros: True sine wave power output, for maximum compatibility with active PFC power supplies. Great LCD display, giving real-time usage stats. Quiet. (I had read older reviews of the power fan running 24x7, but that's definitely not the case with mine. Sounds like there was a firmware update a year or two back which fixed the fan issue...)

Cons: Pricy and bulky, but then again any models of this caliber/quality are too.

Other Thoughts: In my opinion, getting a nice UPS like this is an investment. These enterprise-grade APC units should last for 10+ years, though with some recurring maintenance costs like replacing the batteries every few years. Overall, I'm very happy with the purchase.

This 1000VA model was plenty to power both my file-server (Xeon CPU, 4x HDDs) and my Windows desktop (AMD Athlon II X4 630, Radeon HD 6850) along with 20" and 24" LCD monitors, all using only 70% capacity.

Pros: True sine wave output ups. Very fast swich over time as it is line interactive.

Cons: Price. All sine wave output UPS models by any manufacturer are very pricy.

Other Thoughts: You get what you pay for. There is a reason most large businesses use APC for the UPS and not some off brand. Kind of like Cisco in the networking world.