Hi Charlie,
Was impressed with it. I liked being able to see the start order before the heat, and I hold my hands up to glancing at it as I finished to see the finishing position although that information dissapears too quickly - so I was looking at it while my car was at full throttle.... ooops...
Can't seem to think of any negatives in terms of purpose, it was ace.
The question may be, can it be transported easily to other nationals? It looks too big to fit anyones car without a trailer, and dragging a trailer is a bind...