by Manaz » Wed Jul 23, 2014 2:36 pm
It depends what you're aiming for with your suspension.
I've had coilovers on previous cars because my cars have had dual purposes - a daily drive, as well as a car I put onto the track for various events.
Coilovers allow you to relatively easily set or change your ride height, though that wasn't the primary benefit for me (that said, I did an event on grass once, and the ground was a bit uneven, so I raised the ride height to accommodate that, then put it back to stock later). The biggest benefit for me has been damping adjustment (I've never gone with one-way adjustable coilovers), which means that the car can be relatively easily adjusted for damping based on the quality of the surface you'll be driving on. I probably adjusted my suspension once a quarter.
You can roughly (to a point) tune a car's suspension in similar ways with springs/swaybars, but the commitment to each change is higher, as is the cost. Coilovers have a higher initial investment cost, but subsequent changes are much easier and cheaper to make.
If you're just after low and sporty, you can generally achieve that with springs and dampers for a lot less than you'll pay for a set of coilovers with comparable ride quality.