Abe, I chose the EU3000 for many reasons: 1) fuel tank size (run all night with A/C on), 2) it also has a dedicated 30amp socket. Most of the smaller Honda units only have a 15amp or 20amp duplex outlet (like your home) and 3) weight - about 125lbs just to name a few.
Also, the Honda "EU" Inverter Series produces multi-phase, high voltage AC (alternating current) and then changes it to DC (direct current) electronically. This DC voltage is then processed (inverted) into ultra-clean, stable 120V AC power.
Honda's Inverter generators deliver the highest quality, ultra-clean power for even the most sensitive equipment. Inverter circuitry minimizes spikes and fluctuations in the power source for safe operation of the latest electronic equipment from personal computers to the most sophisticated scientific devices.
This is most likely more than you wanted to know!