The tC rides on the TRD setup: struts, springs, and rear sway. Set it and forget it.
The car pictured was my Sol (may she RIP), with Tein SuperStreets, 7kg/mm front, 4kg/mm rear, ST 19mm rear bar, SRP front and rear camber kits; front set to 1/8" total toe out, rear to at 0º, front camber -2.5º, rear camber -1.5º. rear camber arms were shortened and pivot points moved outward to quicken camber gain. On the chassis scale (wiht me in the driver's seat of course), she had perfect 50/50 crossweight, and 54.4F/45.6 weight distribution.
It was a superb handling car. But for what you get, you also have to give. Any weight changes over a percent (anything approaching 25lbs) would force me to rescale and rebalance the car. New exhaust? Rebalance. Different subs and enclosure? Rebalance. Fortunately, I enjoyed it. It's just not what I was looking for when I bought the tC. heck, the first thing I bought aftermarket for the tC was a DVD head unit. I think of the tC in completely different terms.
The Sol had no A/C, no cruise, underdriven P/S, 250lbs of weight reduction-- it was my go-kart, and the Tein SS complemented that perfectly. Throw the damping into double digits and go three-wheeling. So I know one extreme from the next-- and chose to aim the tC at a happy middle ground.