There is no universal solution for a Plan B passport, as the choice depends on the purpose of obtaining one. Each country offering a second passport has its own unique benefits and considerations. A passport from a country like Malta will provide an EU passport and access to the European market.
Countries like St. Kitts and Nevis, and Dominica, have attractive investment options, in addition to tax incentives for taxpayers. Other aspects to take into account include requirements for visas, political stability, and overall quality of life.