In my experience the Land Rover extended warranty is brilliant and worth the money. My old freelander 2 had a door lock, wheel arch trims and wheel bearing done, all no quibble. When you look around I think most say the same.
A friend had one of these independent warranties and they spent more time trying to wriggle out of paying than actually helping. I did have a Toyota extended warranty on a hilux and that was terrible too…6 months without a car!
The land rover warranties are expensive but the cars aren’t cheap to fix…if you have a rear diff/haldex unit or something similar go it will pay for itself a few times over.