I researched this for a long time and found one that i feel is a great balance of quality/price/power/size:
AIMES 600 WATT PURE SINE WAVE INVERTER
Some features I like:
- Has an audible low battery volatage warning/shutdown feature (this was very helpful on last long trip)
- Has an audible overheating warning feature
- Has a USB port so you can charge usb devices direclty into the inverter.
- Has 2 cooling fans
It is small enough to fit mounted on the angled back face inside my Troy Storage Box.
It cost me less than $300 shipped to my door. I think i got it here:
If you are using the inverter for laptops or sensative computer equipment you MUST use a Pure Sine Wave inverter or you are really risking damaging the equipment.
I also recommend hard-wiring a DC connection in your truck for the refrigerator -- the inverter will consume a lot more battery power converting the current to AC. I drained my battery this way...