I bought an Acer 24x10x40 3 weeks ago and i'm still baffled... It came with PrimoCD (Veritas) which works fine, except the interface for sorting files is more unix like. Works also with Nero, and CloneCD - Roxio is a no no for this drive.
Hardisk is UDMA 100 - I can't get the freaking burner to burn at 24x using any programs. I've burnt over 30 cd's - and the write speed will never exceed 16x. Most times i'm able to achieve only a 12x max average. It's bad that the company is selling a drive that doesn't do 24x or even 20x.
Anyone want an Acer 24x10 to buy or for free... you'll have to pay for shipping and handling though :-)