For clerics, giving up turning can get you one of the following class abilities: cultist (you are immune to atempts to see through your lies), evangelist (you can understand languages magically), fanatic (you are more intimidating and strike easier), healer (you can AC bonuses for healing creatures), justicar (you bring creatures back alive easier), mystic (you gain an extra spell slot), relic hunter (you avoid traps easier), sage (you gain Knowledge bonuses), scribe (you gain Scribe Scroll), shaman (you gain an animal companion), theologian (you resist divine spells easier), wanderer (you gain several skills as class skills), warrior priest (you can use a quickened spell on yourself or your gear), and weaponmaster (you don't need a free hand to cast spells with your deity's favored weapon).