I was also debating what to get. I'm leaning towards coilovers because I'm paranoid about getting springs and lowering it, and as a result, changing the angles/vectors of the IRS......unless I'm worried about nothing??? I'm sure all these suspension companies lower it for a reason but I just like the adjustability of the coilover.
CGM/BLACK INTERIOR 2SS/RS LS3 M6
TTi/GMS Twin Turbo, Borla S-Type mufflers, Hurst Shifter