Does a waiver of direct appeal rights and collateral rights excepting claims premised on ineffective assistance of counsel violate a defendant's due-process rights to a fair hearing when said waiver immunizes the sentencing court from appellate review of a sentence that is clearly unreasonable, unfair and in violation of the prohibition against unwarranted sentencing-disparities?

QUESTION(S) PRESENTED . 1. Does a waiver of direct appeal rights and collateral rights excepting claims premised on ineffective assistance of counsel violate a defendant's "due process” Yights to a fair hearirig when said waiver imminizes the sentencing court from ' appellate review of a sentence that is clearly unreasonable, unfair and in violation -of the prohibition against unwarrantéd ‘sentencing disparities? 2. Does an unjustified disparity between sentences imposed on co-defendants : violate a defendants rights to equal protection and due process?