Wyre Forest Best MTB trails

Been riding at the Wyre Forest probably 4 times now (i’m a local), exploring some trails near the north side towards button oak. found some decent fast xc runs but nothing too difficult. Wondering if anyone knows the hardest/steepest/most fun trail in the forest and a rough explanation on how to get there from any fire roads/cycle path/ bridleways or stops on the butterfly trail like coopers mill.
Cheers