Lite-on SHW-160P6S-04 vs. -10

[Toddc72]

What is the differance between these two? Is it just firmware upgrade only? I am looking at getting one of them. I can't seem to find any info on the -10. Lite-on web site has no info on the drives either. I can get the -10 local from Walmart for 50.00. I was at NEWEGG and seen a -04 for 30.00. Was wondering if getting the -04 was the way to go? Or is the -10? I am replacing my Sony drive. Have had too many problems with it. Now doesn't even work. I have read on here good results and feedback on the Lite-on. that is why looking at them.

Thanks