Maybe I missed it, but what ARE the differences between VS08 and VS0A? It seems it is a matter of personal preference. Is that right? Which is the later of the two? I looked at the date each was last modified and VS0A has a later date, but it seems everyone is using VS08. I have the Lite-On 851S.
VS0A adds new media support. Notably, Ritek +R DL support was added in VS0A, so anyone hoping to use this media type (cheaper than the MKM +R DL) must use VS0A. There are, in all, about 10 new media types added.
Aside from that, nobody outside of LiteOn really knows. It’s up to you to try it out and see how it works for you.