Hi
I use cruise control every day even at its lowest on setting - circa 25mph
I find it easy and if traffic in front getting close, I use cancel to slow down before using brakes, if gap opens up, I use resume button to take me back to same speed
On hills, the higher speed in cruise control works better then lower speeds but it still loses its speed inline with the steepness of the hill. On a motorway at 80mph, it maintains speed on hills however at 40mph on a hill, it will lose speed but does not sound to labour.
I live in a hilly place, infact, I live half way down a very steep hill, so when first setting off, no cruise control until around 30mph, then it goes on and works very well
As a driver, I never hover over the brake pedal, just use cancel/resume buttons mostly, unless traffic is stopping. Just the same as driving without cruise control, you have to aware of traffic and what’s around you
Incidentally, i bought car genie because in the event of a accident/crash, it alerts the AA who then are meant to ring you so as I travel alone a lot, it may save my life if
Many thanks
John