Coilovers are for track use. The reason they got popular is the adjustability in them. So companies decided to make cheap ones like JOM and FK. They are shite. You'd want to be spending 1000 for a decent coilovers set up but it's not needed for your use

H&R or Eibach sportline are highly recommended springs on this forum. Only 200/250 euro. Well worth it. Improves the look height wise but still have the comfort.