I remember those, they are nice!
If I recall correctly member Unimatic1140 even built a secret room in his house just to use and enjoy a GE Harmony set. I fully understand him be honest. If Harmony can compel an exclusive supporter of vintage appliances to build a place of reserved serenity, then you know GE has a good concept going!
What I don't like about the Harmony set is the electronics and inverter driven motor. Big no-no. The design could have been built as is, but equipped with a timer, clutch, PSC motor, mode shifter, brake band and across the line actuating solenoid which I think would have resulted in many more Harmonys being sold.