Power steering pulley question

[Bayareacharger]

i need to replace my power steering pump (SAGINAW) and pulley as it is bent really bad.  Does it matter if I buy the slotted key style one over the pressed one?  I like the idea of the slotted key as it will be easier and I wont have to mess with another tool to buy to press?  thoughts or comments are appreciated.  Best and cheapest place to buy these items?  i see some %30 percent off vouchers for some places but i feel the prices area marked up %40 percent anyways

[cdr]

you have to have key way pump to match the key way pulley, they are not interchangeable with a press on type 

[Bayareacharger]

i understand that they are not interchangeable, i was just wondering if there is a preference for any reason?  pressed vs keyed

[cdr]

i understand that they are not interchangeable, i was just wondering if there is a preference for any reason?  pressed vs keyed

the Key way one is better for high rpm use, & ease of installation .