Curmudgeon wrote:
For me personally? Alone somewhere out in the middle of a Saguaro forest in April or May (depending on when the wild flowers bloom), camera, lenses, binoculars and LOTS of water.
Other than that it so much depends on what you want to see. Summer Hummingbirds: Ramsey Canyon or Madera Canyon. Desert Landscapes: Organ Pipe Cactus NP (my favorite), Saguaro NP. Evergreen Forests (yes we have them too): Any of the "Sky Islands.