Every variable like growth environment and temperature, the type of oak being used to age the wine or differences in pressing and fermentation can all mean significant changes to what you'll find in the bottle.
Maybe try one that's aged in a different barrel or that spent more or less time with the grape skins after juicing. Of course it's still possible you won't like Sangiovese after all that, but it's entirely possible you'll find something amazing!
That's ultimately what makes wine amazing - it's an adventure. Why not start here...