^^N35QU!K, slamming your car does make it hard or impossible in some cases when going over bumps/driveways, but it does negatively affect handling too. You want to be low, but not slammed when you take it to a track. So to sum it up, slammed is great for appearance and show cars if that's what you have in mind. Lowered (not dumped) with the proper settings (is great for tracking, autoXing, etc) but may not look as good as a slammed car in some people's opinions. So it all depends on what you're looking to achieve.
BTW, I have the Eibach's with KYB's that I've been running for 3+ years and everything seems to be fine so far. I'm content with the handling too.
