in my city except shell we have all the listed ones, and for my tata muv and hero two wheeler i used to go for bharat petroleum, reason for choosing is the petrol pump is run by police dept, which i trust more then anyone out there, if i had to visit i choose to go for above mentioned ones.
the quality is just can't be describe, but the service and on time real accuracy and lubes which they provide is far far gret from the other private retail petrol pumps, out there.
will always prefer psu brands regardless of private one out there.