Last point for consideration, the burst of energy (even if the duration is several hours) comes at a price. When the effects wear off you crash, regardless of your current situation. This peculiarity could lead to some interesting situations.
I think the crash effect tends to be most true with things containing sugar, followed by caffeine. What I've found through many long nights in datacenters and on the highway is that Five Hour Energy doesn't have me crashing (in any sense). No affiliation, YMMV.