DBS Bank provides cheap travel insurance covers, you can select a comprehensive package TravelerlSheild. You also have the flexibility to choose the country. They have divided the world in three areas to facilitate their customers.
are you looking for an annual or single trip plan? I have used AIG travel insurance for single trips - my post-trip claims have always been fast. MSIG (which underwrites travellershield) is quite neow - i used their service once and when i tried to claim (for post-trip illness), they take quite some time to process it.