HF may or may not be a big deal on a DC only machine. The foot pedal for the Rebel does add another $150-odd to the price, already a stout $1600. The S-mig is probably the coolest feature of the Rebel, as it adjusts the welder as you're welding to give the novice welder the best chance at being successful.
Everlast still has some work to do, at least in my mind, to show that they can consistently meet the service capability of the others for someone buying these machines. It will likely be the only machine for many, and having it down for service for an extended period is a non-starter. But, that possibility comes at a very attractive price, at least $500 cheaper than the rebel.
As they say, you pays your money, you takes your chances. More for the comfort of dropping it at the LWS for service for the Rebel, quite a bit less for the possibility you may have to do some troubleshooting with the techs on the phone, and a possible UPS trip if it needs to go to the Doc for fixing.
At least in my eyes, the Miller and Lincoln are not even in the same league, control/feature wise.