Completely depends on budget.
Eibach sportline springs - decent drop, decent handling - ~£160
Sportline springs and Koni dampers - decent drop, very good handling - ~£500 iirc?
Coilovers - bilstein b14 - excellent handling, adjustable ride height - £700
Top end coilovers - Ast, H&R, kw v2 etc - £1000 +
Your budget will dictate which ones you choose.