Well, Adolf said he was the biggest "prog" fan in the world. That has me leaning towards Vanden Plas. There is no better band under the blue skies of Earth as far as I am concerned. Their style really hits all the right buttons in my brain. Others have mentioned Accept and U.D.O. I can tell you, Udo still has it as a vocalist. In fact, he absolutely blisters. Udo is one of those singers that has less middle ground than most. Seems the majority either like his style or hate it. He was an acquired taste for me, but frankly, I soon realized he was an incredible vocalist. No one else can sing like he does. As far as Accept...... they are Accept. They are in a class by themselves, much like Vanden Plas. Everyone has different tastes and I certainly don't expect prog metal and powermetal fans to be HUGE fans of Accept, but I can tell you, that they are one of the most professional and entertaining bands you will ever see in your lifetime. Their guitarist, Wolf Hoffmann is an absolute monster player as well. Others have mentioned Brainstorm. Andy B. Frank is one of the VERY FEW singers that actually may be better live than on disc. His thick, meaty voice just rips across the venue. The band behind him, also hammers it home with precision as well. I am personally hoping for Vanden PLas first and foremost, with Accept a close second, but any of those mentioned would be a winner for me.