If you simply want a lowered ride height and don't plan to take the car to the track I'd say just get Eibach or H&R springs. Both seems to give a nice ride height and have been quite well-reviewed - I wouldn't suggest the UP springs. If however you want a full coilover set, UP is a good choice as well as MountainPass. Again both of these coilover sets are quite popular and well-reviewed. There are lots more options out there but these are generally in the tried and true category.
WARNING! after you go down this mod path, it is almost endless.