Game Fair in Paris might be your best bet to see the most outfitters for what you are looking for. SCI has a handful from several countries as well, but will have many more African outfitters.
Each country has their own traditions but also history. That also makes each country unique and warrant their own adventures. I loved the UK for the different histories there. My fallow felt like being in Narnia. Spain has lots of critters, but as stated you'll likely focuses on just a few each time. France is a real treat, staying in a 600 year old chateau is just unbeatable.