On my priest I swap out my BoA staff (+22 int) from time to time to my cresent staff (+20spi) to regen mana fast a full spi set i hardly ever use since the spi gained from armor items is a lot less then the staff. Also it's neat to swap the weapons out when in combat and you're low on mana
I usually swap to Tumultuous Cloak of the elder, Magefist gloves, and staff with +20 spirit. Also I have a lot of choc on me since the noble garden is the holiday . 15stam and 15 spirit.