Headlight types help... that makes me a noob... :)

[3twenty8i]

Ok..... I've been looking at what's out there... Holy crap it's alot of driffrent stuff, but the general stuff that I still don't understand is the following and I hope you can help me shed some "light" get it? "light"

ZKW... zwhat!
DEPO...who?
Ellipsoid...when?
DDE

• Enhanced
• Plus

I also found this on ebay... you can add HID at a later time...
are these any good?
CCFL HEADLIGHT from eBay
These are HID Ready too
Holy crap, I can smell my brain cookin', CAN YOU SMEEEEEEEEEEEEEEEEEEEEELLLLL WHAT 3twenty8i IS COOKIN'!!!!
Sorry...
Help...