I am customer of SBI and I am very much satisfied of the service they provide.
They have the largest india network of banks and atm anf it really helps a lot as you dont have to worry about whether you will find a sbi atm or not.
I Use the net banking feature of sbi and its very nice and reliable and secure too.Only problem I faced was getting the atm card as it was delayed by 2 weeks and leaving that all was fine.Service of the bank is also very nice.I am enjoying my experience with sbi bank and am satisfied.
thanks