as long as you remember your car is lowered, either should be a fine daily driver. i ran the TRD springs for about 11 months, never had a scrape, not even on the surface streets of oakland, and it doesnt get much worse than that. i am currently down 2" on goldline springs, and while i take the entrances to parking lots and driveways at an angle, i am rarely worried that its going to drag. you should be cool with either, just gauge how you want your car to sit. s-techs drop it lower than trd.
edit : also, if you check the image gallery you just might find pics of the s-techs installed. and a quick search in the suspension and brakes forum will yield a lot of information on the different springs, coilovers, etc.. that people have been running.
edit : also, if you check the image gallery you just might find pics of the s-techs installed. and a quick search in the suspension and brakes forum will yield a lot of information on the different springs, coilovers, etc.. that people have been running.