I don't recall which Q model I have, but it is the lowest cost, single burner around the inside and a big mistake (to me). No real problem with the grill, but I think getting the single burner was wrong for us. (It is primarily for my wife -- no meat products including cheese ever cooked on it due to her alpha-gal allergy -- and it gets used quite often).
I'd like to hear from any who disagree, but with one burner there is no real "medium" -- it just gets too hot for many things and must be watched carefully with everything. I've employed several "tricks" to work with it including a second upper grate and shielding part of the grate with foil, but it is still awkward. It works well for what it is, but I recommend any multiple burner Q instead.
As an example, my sister, an experienced Weber Performer charcoal griller, helped prepare a meal the other day. Despite being warned and shown the potential problem, she literally burnt everything she prepared.