Are you kidding? You want to put used tires on your MV? I would never go cheap on tires. No matter what bike you ride, it's the only thing between you and the road.
Though a bit expensive, I'd find a way to stick with the Pilot Powers - the only tires I've ever owned, and perfect for almost all conditions. My 0.02...
'06 MV Brutale 910
'00 Monster 900Sie (sold)