Who cares what company is offering the warranty, as long as it covers issues you will encounter and the cost of said warranty is reasonable.
I care, because manufacturer warranties in general are exclusionary (everything but these things are covered), while third party ones tend to be inclusionary "only these things are covered" and for ME (ME, not you or anyone else), having a warranty on something, then having an issue with it, taking it where you are supposed to, only to be told "Oh THAT thing is not part of the covered items" makes me "red hot mad".
When you have a warranty from the manufacturer (dealer usually) you can usually use it at multiple dealerships, while third party warranties many times are "pay and get reimbursed". The manufacturer ones normally cost more for all that extra convenience, and IF i am going to have a warranty its something "I" want.
Feel free to make the correct decision for you.
I am well aware of doug demuro's land rover / range rover, and how that worked out for him, and I am also aware that, as a rule, these warranties are money makers for the people who sell them, otherwise they wouldnt be in business. Its a Bet... that you will incur more expenses than it cost you to purchase the warranty, and in "most" cases, people lose that bet. Its better in general to simply put the money you were going to spend on that warranty in a bank account and use it to fund expenses.
Unless you are buying a car with known thousands of dollars of poor repair history (like dougs land rover), in general its a losing bet.. but if you ARE going to bet, you have to make sure you know whats covered and what isnt.