Depauls (try hazelnut if you haven't yet)
United coffee house, Starbucks, cafe dori
Starbucks, CCD,Blue tokai
I like both Starbucks and CCD's cold coffee, they make personalised coffee according to your choice.
Starbucks definitely. Try all those frappes.
Blue Tokai Coffee is the best!! If you're in Noida, you should definitely stop by Tea Shop at Sector 37 as well!