Just remember that you really only have the choice of 2 perches on the Koni's for lowering. .25" or .5" lower. Since you said you are looking for a suble drop, I'd at least get the H&R OE's. You may not even be able to to distinguish between 4" of wheel gap and 3.5" of wheel gap. (I'm not claiming that's exact, but just trying to make a point). I'd get the OE's because then at the middle perch you'd have the .5" drop and then you could go up to another .5" in either direction to fine tune the drop to suit your tastes. It may take an inch of drop before it's noticable enough for your tastes.

I have a pic of a sedan on H&R OE's on my computer if you are interested.