I honestly don’t know if it’s worth the cost for coilovers for my ride. It’s just a daily driver that I go take to the curves on the mountains occasionally. What’s your reasoning for wanting to switch?
		
		
	 
 Cool guy points!
The “mechanic” that installed my springs screwed all four of them up. I let him fix one up front and did the other side myself. Now I’ve noticed the rear springs are also not installed properly. So since I have to remove them anyways, might as well upgrade. 
So for me, the springs have been a pita and I’m just done with them. It’s really not the proper way to lower a car anyways. 
Also, and maybe it’s just the TRD springs, the rear sits slightly lower than the front. It’s really noticeable when someone is riding in the back. 
With coilovers, I can compensate for that since they are fully adjustable. 
Its been a year since I had the springs installed. They’ve been great, don’t get me wrong. They really change how the car handles, but I want even more!