Thanks for your input, as much as I love my c4 but I disagree with the comment that c4 is still relevant.
First of c4 has been replace by L5P, made by the same designer, hence making c4 an older model. Second soundwise c4 1/8 inc and 1/4 both sound very different. The best sound is obtained from 1/4 inch jack and that too is not perfect. Few members end up modifying their c4 in order to fix the bass roll-off.