low drop = goldlines
small drop = eibach

spring will give you a better ride then coil overs or air ride.

if you go with coilovers, drop zone, and skunk2 are the best...or so i've heard. I personally despise coil overs due to the horrible ride they give and, personally, you don't adjust em enough to justify buying them.

Air ride is pimp, but its a show type suspension only. It will not be a good performance set up, and daily driving will be aight.

Personally go for springs and a good adjustable strut...if you are going for all show, then air ride is your best bet.

Full coil over set ups pwn all...Tein, JIC, and most other brands will yield better gains all around, plus offer adjustability...they are the only coil overs i would buy.