Would you buy a used car from a car rental provider (one of the big ones)?

I am in the market for a car, and was going to look at new cars only. Some people are suggesting that I can get a better car that’s used for the price of a lesser car that’s new. The guy at the car rental place (one of the big national chains) told me they have used cars that they sell, they have low mileage on them (30k for example) and that 85% of the used cars that dealers sell are from the rental car chains.

Would you consider going this route?

I am open to new or used cars at this point but am looking for advice and opinions.