you want one of these:
I have a customer that uses their spray -constantly- and was breaking the 'older' style all the time. I installed one of these, and it not only has lasted a lot longer, but the customer likes the spray pattern much more... (she called it the 'fire hose' lol)
Its the same connection as yer old, just screw the new one on.. (comes with a new hose, which i recommend installing)
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)