I do love sprng but if I MUST pick one, it's FALL. After the horrible 115 degree temperatures with the AC blasting and the huge utility bills, fall is a welcome relief to me. I love the colors of the trees (if I take a two hour drive up north: cacti don't change colors not do many of our trees here.
Our fall lasts well into most climates winters. Winter in Phoenix is about 6 weeks long. Summer here is not comfortable and while spring is a new season, fresh for new beginnings, there is something about fall that brings such welcome relief.