Power Steering rack or pump?

I have a 2002 Cavalier with 60,000 miles on it. The power steering feels like it's working fine (not hard to turn, etc.) But there has been a wheezing sound coming from the steering column when I turn. I took it to one mechanic who indicated a power steering fluid leak that required replacing the rack, hose, and belt. A second mechanic (whom I have used before) diagnosed a leak as well, but recommended replacing the pump and did not say anything about the rack. Not knowing enough about this - if the fluid is leaking onto the belt (as both mechanics said), will replacing the pump solve that problem, or will the rack eventually have to be replaced anyway? Should I mention the rack to the second mechanic, or would he have definitely caught that problem if it was actually a problem?
Thanks!