I want to lower my 09 Challenger 2" and I'm not sure which springs will give the best ride. The car rides like a dream now I and want to keep as much of that as possible. What do you guys think?

It's going to get a lot stiffer. That may or may not be a good thing. It all depends on what you concider to be too harsh.

I installed Intrax 2" lowering springs on my 02 Stratus R/T. The look was great and the handling was improved a bunch. The ride was quite a bit harsher though. I liked how if felt but others probably wouldn't.

You can use springs(eibach/ hotchkis) or coil overs( M/P,KW,eibach or others). If you go with just springs it a good idea to use their struts, if you go w/ coilovers then you have ride ht. adjustability. You can also check out www.lxforums.com theres a lot of posts on lowering over there,D.