+1 to coilovers. I just recently upgraded to double-adjustables with camber plates. I haven't done sways yet.. still need to learn the true potential of the suspension itself (track noob here). The difference in "spirted" daily driving is night and day. I don't notice stability control kicking in as early/often, and turns can be taken faster with a better ride quality. Not to mention lowering the car a little bit.
I'm done rambling... good luck with whatever you decide on
