Thanks for your replies. I am really glad to be a part of a forum which is so live that you post a question and get so many replies within an hour!!
Coming to my point, I do not have much concern abt brakes, in fact i am more inclined to V brakes as it is very convenient to while quick releasing the wheels. But I am more concerned towards shokers and Shifters in Trek 3700. That's what has put me in dilemma.
Moreover, I have a belt of rocky mountains jus beside my apartment. And I am planning to take good use of it.
In that case I need more sturdy bike. Truely speaking, I have more inclination towards Trek 3700 but it's shocker are wat making me think twice.
@Murty &@ Baccilus,
KHS is not available in pune, so it's out of my list because, i am not going to buy a bike without test-riding it.(lessons learnt from BZ