In strictly utilitarian terms, a strong India is far more to our advantage than an empowered China. Pakistan is a crucible for radical Islam and a haven for terrorism, while China is chronically autarchic and mercantilist. I fear that neither is ever likely to integrate well with the existing group of first-world nations. So far, India appears much more compatible.
Fortunately, it seems like attitudes have been changing in recent years. Liberalization and outsourcing (not without its own problems, obviously) have opened India to the west, while people are starting to realize the westernization of China and Pakistan isn't as inevitable as was once claimed.