Krystal:
If it's your first time, I'd definitely consider New Delhi. There is so much life and architecture there that I always found my somewhat new camera out of memory. It's absolutely beautiful, especially when you visit a number of their famous sites.
My personal favorite what the Akshardham, a Hindu temple based in the eastern burbs of ND. I thought Catholic churches were beautiful after my trip to Deutschland, but architecture-wise, Hindu temples definitely win the round. They're absolutely beautiful, and you'll find yourself in awe over the most simplest designs.
There is so much life in New Delhi - and there's so many places to eat! It seriously is the place to go if it's your first time. And there are so many conservation sites that make this wonderful city even show it's original natural beauty.
I spent a month in central New Delhi and just living there was under the $800 range, definitely a huge bang for my buck. And the people there are absolutely wonderful, other people have different experiences, but most of the local residents there loved to converse with me just because I was American. I've talked about movies and video games, mostly, which surprisingly a lot have shared that common interest.
Well, wish you luck - and when you get back let everyone know how it went!
--BB