Im almost ready to buy some coilovers but what are some good coilovers?or if theres a best set which one is it?
If your just doing it for those two reasons, then you don't even need to look at coilovers. If your purchasing coilovers, there is only two reasons. To say you have coilovers to everyone (I am not trying to be a douche or anything), and then there is because you wanna have a corner carver plain and simple. Look at a good set of adjustable shocks&struts with a quality set of springs.
Definitely check out Viking suspension, they make a dual independently adjustable shock and strut. There is Koni yellows and StrT's, as well Tokico if you can find them that is (Tokico I mean). Springs are all up to you.
Coilovers do not promote good weight shifting, if your drag racing you need to have inertia shift the weight back onto your rear wheels to enhance the traction in the back. Coilovers tend to have very stiff front springs and the rear is usually half the pound rating of the front (500-550 lbs in front, 250-275 lbs in back). Although, yes a front stiff spring is very good to shift the weight back the rear will still be to aggressive to allow for a full squat to attain maximum traction.
BC's are the best bang for the buck. had them and loved them. although you can not raise the front up very much which is my only dislike.
I've heard good things about ST Suspension. KW bought them in 2005 IIRC and from what I understand they are essentially KW Variant 1's with galvanized steel instead of stainless, but if you're in Brentwood California that wouldn't be an issue because we don't have tough winters and salted roads that would cause corrosion. They aren't much more expensive than BC coilovers. While I don't own them, they will be the ones I will most likely buy later this year.