standard generator vs inverter generator

  So my question is simple.  I really dont want to spend 2 grand on a generator that only saves me 10dB.  i know that a 10dB increase in the sound world is like double the volume to our ears but is it really worth spending that much?  I can get a 4000 watt non inverter generator for around 300 bucks.  Or a 3000 watt inverter gen for about 2000 bucks.  Am I missing something?

actually I love tech speak!

I'd say even camping by yourself you'll appreciate the difference of an inverter generator.  They use a lot less fuel, too.  I haven't heard one of the non-Yamaha/Hondas with my own ears, I would like to at some point.  I've owned the Yamaha 2400 mentioned above, and currently own the Honda 3000 and both are very quiet.  

Something to consider with sizing.  If you travel to higher elevations or where it is 100, often, you need to oversize the generator.  You loose something like 3% for every 1000 feet and 1% for every 10 degrees above 60 F, so if you are at 5000 feet and 100 F, like I was 2 weeks ago, a 2000 watt generator that worked fine in your driveway may not work (plus add in the higher pressure in the A/C because of the temperature which makes the problem worse) because it has lost nearly 20% of its rated output.  Plus you have to be careful with replacing the jet with a high-altitude version unless you will always be at a higher elevation.  Take that modified generator back to sea level and you will burn it up unless you convert it back.