Dont't forget an important feature of this Lite-On 24102B drive: it supports "Correct EFM encoding of regular bit patterns", which is required to back-up SafeDisc2 protected disks. Not many drives supports it!
I've just got 24102B from Next Hardware Shop and I'm quite happy with it. It replaced a two-year old 8x Plaextor, which I was quite happy with too, but which doesn't support the EFM Encoding thing.