heh, the problem not with the pedals, more on our psychological aspect and the sense of hearing of every different individuals.
Thus i say, talking about tone, without hearing it in the form of clips or video, is a dangerous thing of either confusing us or lead us to a wrong path!
Lke the ancient chinese kungfu man, learnt kungfu in the wrong way and "zhou huo lu mo"/walk fire go into devilish path"