Thanks for all the replies. After looking into it, the LiteOn 24x10x40 looks like a good option. It supports BurnProof, fast good-quality DAE, correct EMF encoding for Safedisc 2 backups, and full support with CloneCD and Nero. Also I can get it for Â£92 from buy.com using the special voucher.....
The plextors look good, although the 16x can't do safedisc 2, but they are too pricey, if they don't drop their prices they are going to lose out to Lite-On whose drives are 25-35% cheaper in the UK and with basically the same features.