How can people say that India would be the better ally when they are not an ally while Pakistan is? I know this is a hypothetical, but the only way to make it possible is to break the alliance with Pakistan. The people who are in favor of India in this thread are not the kinds of people who like breaking alliances.
Yes, our alliance with Pakistan is an offensive alliance of convenience against terrorism that will end after the objectives are met, but the condition to breaking that alliance then becomes defeating terrorism, or just breaking the commitment, which would be extremely dangerous and irresponsible given the situation in the region. Indo-Pakistani relations don't really play into this.
Paradoxically, if the region became stable enough that we no longer needed to work with Pakistan against terrorism, the radical Islam issue becomes irrelevant and the majority of Pakistan (Punjab, Islamabad, Sindh) would become "better" than most of India, which is no less backwards than Pakistan outside the 4 (or 5 now, if you must) South Indian states of Kerala, Andhra Pradesh, Tamil Nadu, and Karnataka, which are culturally, linguistically, and ethnically distinct from the rest of India. South Indians are Dravidians, not Aryans, and most Tamils only have limited knowledge of Hindi and are far more proficient in English, which they prefer. Big northern states like Bihar, Gujarat, Uttar Pradesh, and Haryana are are unbelievably backwards, with stats like extremely imbalanced sex ratios proving so.
The point is, becoming an ally of India is paradoxical given the existing political situation.