Dyson V11 Torque Drive Motorhead

I own a V11 Dyson and would like to purchase the Torque Drive Motorhead, so I can use it on floors and carpets.

I thought there would only be one available, which would make purchasing easy.
Instead I can now see there are a couple of model numbers -
- 970100-05
- 970100-03 (Gold)
Some have high torque written on them, others just say Dyson.

My concern is that I don't want to purchase a fake as they have the Dynamic Load Sensor.

Welcome any advice / recommendations

Thank you