I'm considering the DH-20A3H or the DH-20A4H, and I don't really know what the differences between them are, or if one is superior to the other. They're priced almost identically on NewEgg ($1 difference).
Most likely I'll be using TY media, though I'm not exactly sure if I'll be buying 8x or 16x. The drive will be in a 5.25" Firewire enclosure that has an Oxford 911 chipset. About 50% of my burns will be in WinXP using Nero, the other 50% in OS X using Toast 8.
I'm just not sure which to pick. Any help is greatly appreciated, and be gentle, I'm a noob. Thanks!