My hands down favorite is Delish brand bajan-cajun hot sauce from Barbados. I've also been able to get it in Puerto Rico. It comes it two choices: "red" and "yellow". They may have names for each one but guaranteed "Delish bajan-cajun" is on each one. Full of pepper taste - I don't have a bottle with me so I don't know if they put in any coloring or funky stuff to make it hotter. It is very tasty though.

And from the US perspective, I really like our own Cholula's hot sauce. It has the distinctive wood cap! Very tasty and available pretty much everywhere - even at both of my local supermarkets.

...Great thread btw!