Dolphin Newbie - Drive Advice

[Adamant Consternation]

Been reading the FAQs, browsing ebay, but I've been completely brain dead the last few months I'd like a little more advice before I go off and buy one.

I've been looking at these two. Good? Bad? One better then the other? Etc.
http://www.ebay.com/itm/HITACHI-LG-HL-GDR-8164B-DVD-ROM-DRIVE-BLACK-GDR8164B-DELL-OPTIPLEX-GX620-/290685570219?pt=PCC_Drives_Storage_Internal&hash=item43ae35ccab

http://www.ebay.com/itm/HL-IBM-40Y8933-16X-DVD-ROM-GDR-8163B-/300651609614?pt=PCC_Drives_Storage_Internal&hash=item46003b7e0e

I've also seen these but they seem rather pricey.
http://www.ebay.com/itm/External-USB-LG-GDR-8082N-DVD-Player-Drive-Wii-Game-Cube-Rawdump-/150747233290?pt=PCC_Drives_Storage_Internal&hash=item23193c3c0a

[scummos]

I have the second one, it works fine. And $8 is not really much of a risk.

[Adamant Consternation]

All righty! Thanks!