OP, the best generator for you depends on what you need to power and how you intend to use it.
If you need some lights and a fan and need it super quiet, the Honda or Yamaha 2000 invertors are the best. They are about $1000 new though. They are well built, are quiet and provide clean power.
If you need to power the AC, coffee maker and microwave at the same time (probably trip a breaker anyways...) and are boondocking in the middle of nowhere and don't care about the noise, a less expensive contractor grade generator is your best bang for the buck.
I have the Champion 3500 watt. It isn't nearly as loud as the generator gens, but its also not as quiet as the Honda/Yamaha. I paid about $300 for it new 2 or 3 years ago. The main reason I have it is for power outages at home. At least once a year we lose power after a storm. My 3500 can run a 13K portable AC unit, my fridge and a couple lights/fans in the house. Yea, I can hear it running, but its easy to drown out with a fan or the AC running. Thankfully lots of neighbors have gens, most of which are MUCH louder than mine, so I don't feel guilty about the noise.
I love my Champion. Its well built and reliable. Starts second pull, every time. I change the oil once a year (or if we have an extended power outage and its running for a couple days, immediately after its done). I haven't used the Champion Invertors, but they sure do seem pretty nice. Specs on par (not necessarily equal... but darn close) to a pair of Honda or Yamaha 2000I gens for half the price. I would give that sucker a real hard look if I was in the market for one again.