In blender, one way you can get a better UV from unwrapping is to apply an object's scale by clicking on the object in object mode and hitting ctrl+A. My UV unwraps have improved significantly. Obviously you still need to set up seams.
not many people seem to know to do that it seems, applying scale is a madatory thing. control+R adds loops and x+edge_loops gets rid of them
>>523312This so much, scale/rotation/etc. Specially if you are importing or exporting a lot.