This is my first pizza oven so I have nothing to compare it to but it did a decent job on my first attempt to bake pizza (it was not my first time making a pizza). Knobs and ignitors worked properly.
The following I decided to do but I dont think it made a big difference I unscrewed those 7 or 8 screws that hold the top, removed it  and put some 1 fier ceramic insulation inside and put it back again. Never tried it without the insulation. 
I gave it 4 stars because I cut myself on the metal that sticks down and stops the door, while installing tthe stone