sulcata gets biggest, What do you mean by dry tortoises? Terrestrial or desert? Alot of the tortoises you posted are more tropical. As for friendliness, that is an opinion. Sulcatas are pretty outgoing but get huge and need alot of care. Red/yellow foots and leopards are too, maybe not quite as much. Pancakes, star, radiated, I have no experience with, but I could help you find care info. All of them need besides the pancake need large oudoor enclosures and need to be fed greens with some veggies and a little bit of fruit. Some sp. (I know at least redfoots) also enjoy meat like pinky mice, but it shouldn't be a staple. If you could give me a list of what you are looking for I could help you single out a species.