An almost perfect racket, the product has a low intrinsic cost and a long life - how can we make them obsolete? Kid based FUD is sown all over their web pages and package inserts, and we all love kids - right?
At this point I'd gladly pay $100 or more for some expert to just recommend a safe seat for our car. I already wasted much more than that on research in terms of opportunity cost.
(please excuse the rant)
Isofix does not have to have a leg etc could be just bars holding the seat at place, thats its only benefit it keeps the object attached to isofix in place in case of a accident. It will not fly around the car as it is attached to it thus provides more safety.
At the end if the crash is huge then newtons laws apply a bigger mass will just run everything over, does not matter if it is secured or not you just can't beat a bigger mass.
That’s how I found our car seat. I was looking for safety and fit, but also what people seemed to like the best. Forums are great for stuff like this.