I was told by the Honeywell technical guy on an official Honeywell course 25 years ago that the quality replacement motor had blue wires and is heavy duty. They are also packaged in box/bubble rap because motors are susceptable to impact damage. The blue wired motors are usually about £15-£25 compared to orange wired at £7.50-£12.50.
The orange wired motors are less robust. I have had several jobs since where customers complained about regular replacement motors on s plan systems, so I replaced with blue wired and had longer stints between subsequent replacements. Basically you will get 5 years plus from a blue wired motor, but only between 2-5 years on an orange wired motor - anecdotal evidence only, so don't hold me to this, but it seems the honeywell guy was telling some truth in my experience.
Anyone who has been in this game long enough will know that the honeywell motorised valves are by far the most reliable, which is helped by their rubber ball technology as opposed to 'rotating shoe' type water sections. The rotating shoe valve such as danfos have pop-riveted orange wired motors that are suseptable to resistance of movement in the water section caused by magnatite locating between the rotating shoe and the valve body. These danfoss motors are not replaceable and the whole actuator head has to be replaced when faulty - truth is on these valves, you need to replace the water section as well - with the honeywell you don't.
