totally disagree w/ the previous post. you, sir, sound like an apple rep reading a script. If a consumer is expected to dump $1500 into a machine, he has every right to be cautious, check forums, get his needs addressed with certainty before buying and then seeing his iMac resurface as a post-defect refurb 3 months later.
I've had my "new" PowerBook replaced 5 times in the last 18 months (edit: Rev A 2x; Rev B 3x); a different machine but a classic case study. Was I simply "unlucky" all those times? Don't think so. There were obviously problems that Apple was suppressing, unwilling to admit them, preferring to "settle" under the table as not to get their rep tarnished. That being said, they paid me handsomly w/ an iPod, Airport Express, multiple RAM chips, Computer bags, so in the end, I got what I deserved.