I agree with aeoth, no HD-DVD or BluRay. Too close-a-call.
Also, PLEASE not Asus. I've just had an Asus WL700gE router, and I have NOT had very good experiences with their tech support. At all. Basically I told them where to shove their crap support and their rubbish FAQ, but the person simply replied: "If there is an update we will upload it." Well you damn better!!! "You are welcome to refer to the FAQ" which is a ton of faqing rubbish! It doesn't contain an issue that is WIDELY received: incompatibility of this "state of the art" router with vista. *Sigh*...
Anyways, not Asus. If I win and it has anything Asus in it, I'm selling it on eBay. I swear to god.
Back to the job in hand:
I say we go for two drives. Two identical drives, of course. I don't know about you lot but I do a lot of DVD-DVD and CD-CD copying (not in the bad way *angel*) and it's really useful, rather than having to buffer all the data up then switch disks. As for brand, anything LG/Lite-On.
On the subject of optical drives, I'll cleverly switch to 5" drivebays and suggest this: http://www.soundgraph.com/Eng_/Products/oem3.aspx?topMenu=2&subMenu=1&leftMenu=43
gimmicky maybe... but I've always wanted one and since I had a Packard Bell iMedia forced upon me (okay not forced, but I'd have prefered something with a warranty that actually allowed me to go inside my own computer) I wasn't able to get one... I'd just really like one. After reading in on the tech and the apps included, it seems pretty cool

Summary:
Anything LG or LiteOn
Nothing Asus or eBay will see a really cool PC up for sale
Soundgraph iMon ftw
My 2c