I know the setup in your first post is nearly impossible to get your hands on at RCE. But is a nice setup none the less.
That and with the koni struts, you will want the RCE black springs. Another note, not that is hard, but you have to modify the stock front spring and strut housing for the konis to work. Also, RCE's black springs have been on backorder since December. And I've currently had a hell of a time trying to get them to send me my black springs. But that's a whole other story.
Sent from a long time ago, in a galaxy far, far away
The GTWorx/Bilstein setup was nice, I drove a coworkers WRX for a week with that setup. He had gone through a couple sets before settling on those, he said he wanted something that reminded him more of his BMW with the sport package.
Solid handling, not super rough, but definitely not a plush ride. I'd say a good bit harsher than the stock 2015 I have right now, but good setup overall.