Everything went great for me here in Rochester. I printed out the $25 off $100 coupon that expires on 4/28 and took it in to the store. They seemed to have plenty of both the 32x and 24x Cendyne drives left, and both appeared to be Lite-Ons (12 digit serial). I figured I'd just get the 32x since it was only $10 more, so I just took it to the checkout with my $25 off coupon and asked if they would honor it in store. The checkout girl said no problem and gave me the $25 discount, so I got the drive for $91, and the form for $30 MIR to bring the total to $61. The drive is labeled as a Lite-On Model LTR-32123S.
Edit: if I'd realized that the rebate on the 24x was for $40 not $30 I would have bought that instead and saved $20, oh well.