My family has two accounts in HDFC bank and we opened the second one because we love its service and flexibility.
Its netbanking is really fast and reliable. They give good customer satisfaction and great offers on debit and credit cards. Thay also have a good intrest on FDs and easy loan system. If you are planning of shoping abroad then HDFCs credit card is best.
Please consider this bank if you are thinking of opening a new bank account.