In an ideal world one should not be spied on by anyone else, but in this particular case I think India would be more ok (so to speak) of being spied on by the US than by China, the reason being that India has an ongoing and still open border dispute with China, while its relations with the US are a little more benign. Granted, I'm not from India and I've never visited the country, maybe someone more knowledgeable than me can correct me if I'm wrong.