Equilateral triangle- Where each angle of the triangle is measured equally.
Scalene triangle- A triangle where all angles are unequal.
Isosceles triangle- A triangle where two angles are equal.
Right triangle- A triangle with a right angle or 90° angle.
Now your question is what is the best triangle. That is an opinion question so I can't say. But out of the triangles above you could pick which one you think is the best :)