Of course chopping one's vegetables on wood instead of stone, will have a distinct effect on the taste (not to mention the effect stone has to the knife). Some people also swear that only a carbon fibre knife with silver trimmings gives real high end food.
But don't forget that the gas tube or electric power cord might have an even larger effect. But, to be honest, if you don't have a high end stainless steel stove at least 1.5 metre wide, you won't really be able to distinct between tastes anyway.