Casing material isn't going to make much difference to protecting hdd but I do expect enough ventilation vents/holes (not expecting a fan at these prices) to help dissipate heat generated by these hdd. Went to local officeworks yesterday, was told nobody in Victoria have 2tb in stock. I went to another officeworks today and they have 5 in stock on the shelf. Price back up to pre-sale level. Despite having a receipt dated yesterday from the same store, they wouldn't sell me one at sale price. Arggghhh!