I would think that the aluminum would be less likely to dent if well secured to the drums. The hard wood surface underneath would not allow it to bend.

I vote for cesium.

That would be my concern, similar to drums finished in chrome wraps. Those wraps tend to make every little ding and dent painfully obvious to the eye.

I suppose in the unlikely but not impossible event that something fell on them in my little studio that I primarily only use myself (I don't have bands in to record), and the finish got a big dent, we could just coat another sheet of the stuff. However, if I have to fix it down as securely and permanently as I can then that sort of rules that option out.