What is good to use for cleaning exterior windows?

Mine gets streaky whenever I first turn on the wipers that very first 5mins after it starts raining. Thanks in advance for suggestions.

 

here is what i do ... clean glass with "Perfect Glass" liquid, then use a glass polish followed by Rain X, then put Rain X washer additive in your washer canister and voila ! super streak-free windows .

 

Aaron how old is your car ? Does it sit outside or garaged ?
I have always just washed and dried the windows of all my cars. Rain X works well also, like Cypress said.

 

The car is about 9 months old. Sits outside and there are trees that is right next to the parking space. I've tried to clean the windows by scrubbing with a soft cloth but it still streaks.

Definately going to try Perfect Glass and Rain-X.

Thanks for the helpful comments Chopper and Cypress.