Mark Driscoll

Hi

I was wondering about Mark Driscoll,I know very little about Him and listening to a couple of messages of His,I do know that He hangs out with Pastor John Piper who God uses to speak to Me and I love DesiringGod John's ministry,yet Mark is radically different in His appraoch He seems solid though and I'm wondering if He's sound Bibically,I'm open to any new reformations of God's Word and His church.However I am strongly against what the majority of the Emergents teach.

Thank you for your time
Brian :-)