Since it appears Lemmy and the boys have cancelled the rest of their European tour this summer. My main vote would be fore King Diamond if they can get him. Secondary pick would be Judas Priest. Of course I'd love to see Blind Guardian added to the bill but I don't have much hope of that since they aren't doing much this year. I'd say Iron Maiden but I'm seeing them in September, of course one can never see Maiden too many times. It must be legends of similar status and not some new crap band IMO.