I usually only run about .5" lower than stock but my car's been at about 2" lower since the last Norcal meet. I prefer only being minimally lowered though.
About the many questions being posted to antagonize someone in particular, seriously, please take it to PM or talk to a moderator about it. Clogging up forums with questions you don't care about makes things worse for everyone else. I don't know what happened but I'm only answering this one just in case you really are wondering. Good day.