A&E Cage Company cages we feel provide an excellent combination of safety and value. Here are some distinct advantages: -- The spring loaded locks are escape proof, easy to install, and more convenient. -- Safety latches for the grates that prevent birds from sliding them out. -- Welded bar construction instead of drilling holes like other companies do or having the panels simply slide in, risking your bird's feet, wings, or beaks getting caught. Using welded bars is safer for your bird and for you because there is no place for bacteria to grow. When you have the holes drilled through, bacteria gets into the holes and there is no way to get to it. -- Wheels that screw in, not snap in, making them more secure. -- Trays are thicker and more robust than others. They last longer and are more durable.