I'm glad to see more people are getting this installed. I planned to have an alignment by now, but had a death in the family, so scheduling went out the window. Hopefully I can get it done this week.
Adding my thoughts and experiences...
I've had the subframe clunk since day one, and it happened more often in the Texas heat vs "cold". I suspect the cosmoline VAG sprays all over the undercarriage contributes to the subframe sliding around when it's extremely hot. No solution from local dealerships, and installing the ECS kit seemed to make it worse. I might have been more disappointed and frustrated at that point, so I'll err on the neutral side and just say the ECS kit didn't resolve the issue for me.
Fast forward to the TyrolSport kit...
Installation was cake. I had the car up on stands, and used a floor jack to help re-seat the subframe. I was slow and deliberate with bolting everything back up, and then did the final torque.
Driving was immediately different - the front end felt solid and communicated more. However, once you adjust to the slight change, the kit will simply blend into the car and disappear. This is not a mod you can detect like chipping, a solid dogbone mount, aftermarket suspension, etc.
The only issue I've seen so far is that my steering wheel is slightly clocked to the left, like GTI_Speed. An alignment should solve it, but I have low expectations for my local dealership. If they don't fix it, I assume a twist on each tie rod will resolve it.
This is how the car should have rolled off the factory line, and knowing that it's physically impossible for my subframe to ever slide around again is priceless.