The Weber Genesis and Summit grills are made in USA, and are both excellent gassers. I can't afford a Summit. My dad has a Genesis that is well over ten years old. It is stored outside on a covered patio in Houston. My motto is buy the best grill you can afford. If your pockets are deep enough for a Summit, go for it. If not, I don't think you will suffer much if you buy a Genesis.
And, yeah, the side burner is not a big draw for me. I have a camp stove in my camper I can use if I need it, and I very rarely need it.