Welcome!
MAK is ALL American built. (They will not even buy a screw from China - if that is important to you) It is made of a grade of stainless that will not rust. The controller is equipped with 3 meat probe ports so you can cook three different items and know when each is likely ready to come off the grill. The MAK 2 Star has a smoke box that does duty as a warmer for foods already cooked. And - you can opt for the WiFI controller which will allow you to run your MAK from anywhere in the world where you have internet service. There is a smoke setting on the MAK that will amaze anyone that thinks pellet grills do not produce a good amount of smoke. Yet it can also grill at 500F. You can change out the pellets for a different type extremely easy with a MAK.
Memphis is better at high temp grilling than it is low and slow or smoking. They also offer stainless - but it is not the same grade as the MAK, and can rust. Their controller and the one in the RecTec are made by the same company. Good controllers....not as feature driven as the MAK. I think they offer a quick pellet dump feature as well.
RecTec is a well built, Chinese made grill. It is powder coated, but has some parts that are stainless. It has more "curb appeal" perhaps than others. It has a 40 lb. hopper so - it can hold an entire bag of pellets.
I have owned a number of brands of pellet grills...I currently own 2 MAK 2 Stars.