Chamberlain Garage Door Opener 3/4 HP Whisper Belt Drive with Evercharge Standby Power WD962KD —
Works & looks great, very quiet also. I tested the battery back-up & that works like it should. If the door weight is set properly (@10lbs) you should only need a 1/2HP unit. I wanted the belt drive, battery back-up and outside keyless entry. I replaced an existing chain drive so it bolted right up, no fuss. Well worth the money, had it delivered to the house! Enjoy!