I'm assuming that's supposed to be coming to the US? When? You were o.k. w/ the Monterey w/ no LATCH?
Supposed to be out early 2010. They really do look cool! The first thread posted about them had a cool video that had some crash test videos.
http://www.car-seat.org/showthread.php?t=82794&highlight=cybex&page=2
They might be expensive though. I calculated how much they were in UK in US dollars and they were $170 to $270.
Here is a crash test video
[ame="http://www.youtube.com/watch?v=2WfDdACxSjA&NR=1"]YouTube - CYBEX Solution X crash video[/ame]
The dummy does move quite a bit to the side at the end but that could be normal, I don't know.
We don't know how the monterey does after impact since the video is cut short
[ame="http://www.youtube.com/watch?v=PlI7FI9xBww"]YouTube - Sunshine Kids Monterey Booster Seat Side-Impact Crash Test[/ame]
here is a romer video that is cut a bit shorter than the cybex but longer than the monterey and it looks like the dummy would keep going like the one in the cybex video.
[ame="http://www.youtube.com/watch?v=hvqy98O3MDQ&feature=related"]YouTube - Crashtest of Romer Kid 2-3[/ame]
These could all be meaningless though since we don't know the size of the dummies or speed of the crash. The variables could be completely different and so looking at them side by side might mean nothing at all. The dummy on the monterey looks wider in the shoulders but I am also wondering if the video is squished a bit.