I was using a MK 1 Matrix Platform but the Absolute Carbon was about 3 mm too wide. It was also very cumbersome to carry around.
The new Preston Innovations Absolute Platform is perfect. It is compact and doesn't take up much space in the car.
I have put the platform together and found it to be extremely stable. There is one thing you need to do though - the thread ends on the hand-wheels used to tighten down on the joining bars need to be filed flat - otherwise they dig into and damage the aluminium.
I'll post a few photos of the platform in action in April when I'm in Holland.