Help me buy 1.5 ton 3 star Ac

Apparently, china and japan have much better acs, like 50% more efficient than ours.
One video says that from next year there is a bump, from 5 to 5.6 for 5 star and yes current 5 becomes 4 etc. Not sure if this is confirmed.

Some people suggest that we should be more aggressive and 5 should ideally be 1, ie starting point.
It seems upgrade was due from 2025 but they deferred it to 2026