The best residency is the one you can actually use and maintain.
Start with the goal
Do you want a place to live, a backup option, a route to permanent residence or better mobility? The answer changes which countries make sense.
Check the real requirements
Look at minimum stays, address rules, insurance, income, family coverage and any investment that has to remain in place.
Think past the first approval
A residency that is easy to obtain can still be awkward to renew. Check what has to be maintained and what happens if your plans change.
Check the tax effect separately
Immigration residence and tax residence are not the same thing. A new permit can change your travel pattern without changing your tax position in the way you expect.
Takeaway
Choose the status for what it actually gives you, not for the brochure.