I am using HDFC bank signature credit card from last 3 years and so far I am very satisfied with bank and its credit card.
I usually make expense of around 2.5 lacs anually so I have nit charged for any annual fees. I have used this card to buy my bike also and bank converted it to EMI very easily. Make sure that before having HDFC bank credit card you should have you bank account in HDFC which makes easy to go for payment else payment process is a but hactic. I would recommend this credit card to everyone.