This ^^^

For me:

5 is a perfect ride. Water & chargers provided if it's Uberblack. Air conditioning offered, no crazy music playing. Automatic 5 if they have the Spotify thing worked out (which I've done once out of 200 rides so far).

4 is a good driver with small problems. Car is dirty, air conditioning not offered, no water or chargers (or even a substandard vehicle) with black, they have screamo/Metallica/obscene rap playing (which has happened multiple times with no regard to what I might want to hear as a passenger)

3 is LOUD music, filthy vehicle, stained seats, unbearably hot with no effort to accommodate, driver doesn't understand that they must follow the pin for pickup and typed address to drop off