At first, I used to travel with a group of people. As time went by, I started to travel alone. I prefer long journeys the most. Then I get a chance to approach local people, their culture and history more.
As for travelling style, if I get a chance I prefer a luxury type of travelling more. By chance I mean conditions in the country I am travelling too. For example, some countries do not have national flights, thus I have to travel to different cities in another part of the country by car or train and boats too.
Of course, comfort plays a crucial role for me but visiting a country is my priority, hence, I can forego my comfort just to see the country. For example, Sudan and Somalia are among such countries. There are some countries where I even have to be guided by armed soldiers for a safety reasons.