I live out in the middle of nowhere. Most of the roads here are, at best, atrocious.
When I first got the Spider, every journey was accompanied by a cacophony of rattles and squeaks from around the dash area.
As soon as I fitted my brace, I'd say about 80% of the din dissipated.
So, the brace is definitely having some effect.
Now, whether or not it actually goes into corners a lot better is debatable. Due to the fact, that before it was fitted, I was a bit scared to give it the beans into the bendy bits.
Now though, I seem to trust the handling a lot more, and I'm a lot more confident throwing it around corners, (much to er'indoors annoyance)
To me, that's a result