for 1K i say BC BR coilovers, you can even customize spring rates within a +/- 4k range (range from their recommended spring rates), I can also throw in a set of extenders for the rear
if you want to spend a little more you can get the ER, which are inverted monotube (between $1200-$1300) or for this same price I can hook you up with some BR w/ Swift coilover springs
and if you end up just wanting springs I'd say go for Swift Spec-R, the best springs hands down