I heart Camelback Mountain, because it is an awesome work out and gives a great view of the sprawl. It is for sure my favorite hike in Phoenix!
That being said, it's not easy and feels more like a rock climb than one would expect. The parking is obnoxious but not totally excruciating- I wish it was more accessible to the many people that hike it often.
Best work out hike to earn your brunch in the Valley...