I pulled the trigger on Dinan Stage 3 this afternoon. I'll leave the original shocks for now. The EDC shocks are ridiculously expensive at $800+ each ($632 at realoem.com), so I'm leaving the originals on for now. It should be installed in a couple of weeks. I'll update - thanks for the input.
2008 E90 M3 - Dinan Stage 3 and BBS CH's
2000 328i sedan (UUC suspension - still the favorite)
2012 Mini Cooper (wife's)
1991 325iX (sold - gone but not forgotten!)
2011 X3 (Performance Center delivery done May '11)