I like the options of this one. The fact that you can calibrate both morning and evening light levels or use a timer and have the door open and close either to time, light setting or both seems like a great option, I was wondering if anyone has it and what your opinions are of it. I really need an automatic door, but not sure which one to get, but right now, this one is in the lead for me. I am looking for unbiased reviews. Thank you in advance!