The direction you go is somewhat dependant upon your intended usage, it's definetly influenced by your budget, and to a lesser degree, personal taste on bling factor.
The XV Level 1 and Hotchkis TVS kits have proven that the OEM design can be taken to a much higher level of performance without radical changes. Both approaches are primarily stock based design with slightly different emphasis on approach. If you want things to remain original looking, or close to it, these may be the way to go.
The other end of the spectrum is any of the coil over conversion kits out there. They do look nice, they do improve some aspects of geometry, they do use more current design parameters, and they cost a bunch, comparatively, to join the club and they will definetly step up the performance of the chassis.