ive had:

h&r race- looked great at first, but sagged a lot after a year. a little too low for everyday driving, esp on harsh LA freeways

eibach sportlines- bought 'em used. too soft for my liking

progress coilovers - currently ridin' on these and love 'em. dropped my car like 2" and still responds like stock height and a tad bit stiffer.