Eibach will give a 25mm drop all round so the "gap" will depend on what wheels and tyres you have and if you have spacers fitted.
Tein are also decent but not such an aggressive drop.
All depends on what stance etc. you are looking for.
The above springs are fine on OEM shocks.
If you prefer an adjustable set up, then you will have to look at coil overs.
Alex.