Well I never was one "who hung on to their old Judas Priest cassettes" because I never had any and also I wouldn't be able to pick out a Judas Priest ditty even if I were stirred into an electrified barrel of mercury filled with boiling scrap lead, cast iron anvils and molten steel Double Neck Bich's.
But since Damian Penny (erstwhile of Daimnation, now on hiatus) has reviewed the documentary Anvil! about a veteran Canadian metal band I will at least read about them. Damian likes Anvil! which is good enough recommendation for me.