I use a Yeti 150 to charge cell phones, keep a laptop charged, inflate and deflate a double height queen size air mattress and a few other misc. items. it lasts at least 4 days before i need to charge it, i use the 4runner to charge or will leave a Boulder panel plugged into it to keep it topped off.
i plan on upgrading to a Yeti 400 when I buy a fridge so that I can run the fridge off the yeti
i bought a yeti 1250 for work, it gets used in the field on construction sites inside buildings during shutdowns when we don't want to setup generators and have to run miles of drop cords. the guys have also used it to run a 65lb hilti rotary hammer to demo and install some parking bumpers, it lasted a couple days before blowing the fuses (which just meant a quick trip to autozone). i've been very pleased with goalzero customer service, when i was troubleshooting the blown fuses they gave me great direction for how to access and replace the fuses.
(and since i've been asked a few times if i thought it would be good for camping -- No. it would not, the thing is a tank, its heavy as ****. unless you have a very specific need, a small generator would be better than the 1250 if you need that much power. it has come in handy tailgating though running a tv and stereo and not having to listen to a generator)