What's the difference between LG and LG (HLDS) 16X DVD-ROMs?

As in the topic, like, I’ve seen for sale both LG DRD-8160b and LG (HLDS) GDR-8160b.

Different models, different chipsets, different everything, or so it would seem to me due to one being HLDS (With Hitachi) and one not, but still both 16/48 drives and for exactly the same price (different stores).
They’re both available for about the same price here, as the cheapest DVD drives currently available.

Is anyone familiar with them? Which would be better? Anyone care to share their experiences?