Most comparisons of these three jurisdictions are written by a firm that only operates in one of them, which means the “comparison” quietly tilts toward whichever one they sell. We work in all three, so here’s the version without a thumb on the scale: what each one is actually built for, and how to tell which one fits your situation.
(This assumes you’ve already confirmed what you’re allowed to invest under FEMA and RBI’s ODI rules (read our FEMA and RBI guide) that’s step one regardless of which jurisdiction you pick.)