v-kool is a premium brand sunfilm for cars, buildings etc. You get entirely transparent sunfilms from them which you can put on your front windscreen thereby reducing heat/UV/IR and still maintaining visibility. Due to this you would get better AC, mileage (probably), less damage to your dashboard/interiors, leather seats due to UV.
Being in Delhi I think the fully transparent sunfilms would be better for you all around. You also getter darker shades in v-kool, but its not recommended that you put them on your front windscreen (I've seen cars with that too !!)
For the Civic, it cost me close to 35K for v-kool. I opted for fully transparent on the front and rear windscreens and 50% visibility for the sides.
V-KOOL check that out. There is also a comprehensive thread on sunfilms. Please do a search for them.