I've got the Challenge Fort tyres, these can't be much different to the crits! mine ride well but you have
to pump them up very high for a firm ride, easily fitted to rims unlike Veloflex tyres
One problem I have found is that the tan wall is stickish all the time and they soon get dirty.
Cheapest for the Crits is at Planet X [I think!]http://www.planet-x-bikes.co.uk/i/q/TYC ... bular_tyre
Fit Latex tubes for the best feel as in riding on true tubs, though be prepared to pump them up every two days.http://www.planet-x-bikes.co.uk/i/q/TUM ... inner_tube
I hate RED DWARF