I will be installing Eibachs on my 1997 E420 to somewhat, not drastically, improve handling but hopefully not hurt ride quality much. For this reason H&R is out - I already have the Eibachs.
The car has 5 notch pads front and 1 notch pad rear.
I am not interested in lowering the car by much more than 1", or create alignment issues.
I intend to start with 5 notch front and back (Eibach claim to lower the rear more than the front - 1.2 vs. 1.6 inches).

Any significant issues you can think of with this plan?

Again, focus is some lowering, improved corner handling, maintain ride quality, not screw up alignment since I don't want to buy a camber kit. The car has OE 16" wheels with 235/50/16 Toyo T1s.

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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)

ttt - anyone?

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2008 S550
2010 GLK350
1997 E420 (retired)
2005 CLK500 (retired)