Go for the Green Mountain Grills. I've thoroughly enjoyed mine. Neither propane or charcoal can match the flavor or convenience. It is so nice to be able to set a temperature and have the grill hold that temperature, so you get the desired results. A pellet grill has the convenience of propane, plus the ability to more precisely control the temperature. And it excels over charcoal at flavor.
There are two disadvantages to a pellet grill over charcoal or propane. First, you are dependent upon electricity to cook with a pellet grill. I see you live in the mid-West where power goes out frequently. When I used to live in Kentucky, it was always nice to grill out when the power was out. You can't do that with a pellet grill unless you have a generator. Second, pellet grills don't do well at direct heat, thus they don't do well at searing meats. Some will claim that this brand or that have methods to sear, but don't believe it. No pellet grill sears very well.
For items that depend upon searing for good flavor, I'll cook them on the pellet grill, and then reverse sear at the end of cooking on my Weber Q. Many of my friends who have pellet grills also have a Weber Genesis or Spirit, or a Weber kettle grill for cooking such things as steaks and burgers.
When I was researching my Green Mountain Grills Daniel Boone, I also took a serious look at getting a Big Green Egg. They do have advantages. One is their ability to cook at extreme high temperatures. That makes them ideal as pizza ovens. And yes, they do VERY well at searing meats. But they are still charcoal. You still have to tinker with vents to get just the right temperature. And you still have to deal with the mess associated with cleaning up ashes and putting in fresh charcoal. On a long cook such as a pork Boston Butt or ribs, you still need to stoke it with more charcoal, and hope the temperature doesn't spike.
Of course you still have to clean ashes out of a pellet grill from time to time, but it is so little in comparison, and can just be vacuumed up with a shop vac. Nothing as messy as dumping the bin from the bottom of a Weber kettle grill. Not any where near it.
So yea, my vote would be a Green Mountain Grills pellet grill with a wifi enabled controller.
P.S. Find a local distributor for Lumberjack pellets. They are far superior to pellets from either Green Mountain Grills or Traeger. Treager pellets are quite average.