if most of your lanes win the team wont need you at all so madstone is effective
if you actualy have to play madstone fails
also let me speak on udyr example
if enemy jungler knows when you are running with wrigless and spirit stone while he has spirit stone and 2 long swords or maybe even elder lizard
then the jungler with the long swords will whack the flor with udyr who is believed to be one of the strongest champions early game and he ideed is
madstone is a noob trap for those who cant use it and even those who actualy are good at using it (rare occasions) are fighting with the game itself, game is made to require junglers presence in early game while madstone throws it away for jungle control (this is what difers good madstone player from bad madstone player, bad madstone player will stack the flare and lose cause he sucks, good madstone will pump his team full of gold meaning that they are quite decent despite having no ganks and starve the enemy jungler of gold making it a decent 5v4, still madstone is weak so its easy to fail )
whatever you pick OP i dont advise picking madstone because your original poist makes me think that you dont grasp what madstone is about