10 days to visit Bulgaria and Romania or Georgia and Armenia?

Hello Reddit,

Husband and I are visiting Türkiye in June for a month. We are hoping to visit neighbor countries for 10 days out of those 30 days.

We are stuck when deciding to go north west of Türkiye and visit Bulgaria and Romania for those 10 days, or should we go north east and visit Georgia, Armenia, or even Azerbaijan?

The videos we have watched on YouTube show beautiful hiking trails, monasteries, friendly people… but all those cities and mountains seem to look the same to our uneducated eyes.

Can you share your experiences in those countries and advise us on which route we should take?

Context: We’re in our mid 40s, and have traveled to Europe and Asia. We’re especially interested in local history and culture, especially churches and mosques. Food and accommodations are not our priority since we feel that we can be happy with whatever.