Honestly installing H&R's is not going to make a huge difference in ride height or quality.
A little lower, a little stiffer.
Most people wont even be able to tell the difference.
Or at least that's my perspective, my e39 is dropped over three inches on stiff coilovers so sport springs aren't a big deal from my point of view..
A word of advice if you have 110k on your shocks and your thinking about replacing the springs just go ahead and replace your shocks, if they aren't gone yet they're headed there fast, and pulling struts isn't something you want to do often, trust me. Billstein HD's are cheap(ish) and nice.
Last edited by Stupid Kid; 11-19-2012 at 08:46 PM.