I did. I've been through 4 different setups on my car.
I ran stock, stock struts with prokit, koni with prokit, back to stock, and now koni w/neuspeed sports.
The koni's just hold up to the drop much better than the stock struts do. The performance is incredibly better and they are also adjustable and rebuildable. My stock struts were worn out anyway so I replaced them with the konis. Then I sold that setup, went back to stock, and now im back on a Koni setup.
The Koni rear struts are just a straight bolt in job. A little modification is needed just to reuse the stock rear bumpstop and dust cover. Basically just take a drill and bore out the hole a little bigger to fit.
The fronts are heavy modification of the stock strut. I had all the fab work done by redshift motorsports. I couldn't have any downtime with my car and I also just didn't have a place to do the work myself.
The full setup with all new parts, fab, springs... etc... will run you in the range of $1200-1500.
Oh.... I always went with Koni Yellows. I see there is a Koni STR option that is orange. I believe those might be a direct bolt in affair. Im not entirely sure though.
RedShiftChris can answer any in depth questions you might have about those.