it depends on how much you wanna spend.
Tein coilover have multi-adjustable settings. I'm not sure but height may be one of them.
A lot of people get H&R (pretty darn good brand) and eibachs. I've got tokicos which suit me just fine. They usually have 2 different set of springs... sport and race. The race is usually lower. Different companies have different heights drop for the car. Most springs from these companies have already been tested, so it shouldn't settle your car at all if any..
Whatever you do. . . PLEASE don't cut the springs. You'll cause more headache than its worth...