[Scuderia_Turini]

I am a big fan of the Start track. The rigidity definitely makes it more durable, the section ends don't curl up. The surface offers a bit more grip than Sport, so non-mag running is better. 
The cons are that there is only one curve section and that the radius is different from Sport/Classic so no borders are available off the shelf. The standard controllers do not have a brake wire but nowadays the standard Sport units are  the same.  

Leo

Edit: Having looked at the set offered by 'Robert Dyas', that doesn't look like the old single curve track sections.
https://www.robertdyas.co.uk/media/catal...5306_2.jpg