Helloween's set is pretty good. They're doing all the best songs from Straight Out of Hell (imo), but they need to drop the songs from 7 Sinners, or at least swap them with the songs from that album that are actually good. I'm really glas Power is in there too. Overall I'd say the sets from the first Hellish Rock tour were better for both bands.
07/19 - Slayer, King Diamond
08/11 - Van Halen