#1 consideration is, "is the generator quiet".
The Honda and Yamaha's are quiet, about the same loudness as a person talking in normal outdoor voice conversing with someone about 10 feet away. Note though, in the quiet outdoor environment you can hear, but not necessarily understand, that person talking at 50 or more yards away. In the quiet outdoors many of us really dislike listening to the constant drone of the generator.
On the other hand the Champion brands are usually very, very loud. Extremely loud! They will drown out normal conversation in and near your campsite. Most importantly, even if YOU don't mind the noise they will greatly disturb other campers within about 1/4 mile (400 yards).
There are few things more aggravating to those of us go into the out of doors to enjoy the quiet of nature to have someone set up camp 25-200 yards away and crank up than noisy #$%@ generator.
On the other hand we don't mind children running around playing and making noise. The children are making the joyous sound of fun and play. Just as long as the parents rope them in and quiet them down by bedtime of about 8:30-9pm.