I would drink these all day ( if it wasn't bad for you ) They taste amazing! Literally met all my expectations with chilled coffee. Great for on the go, also a good hit of caffeine! Reasonably priced, and always on offer somewhere!
A single shot or standard drip drink probably does offer enough caffeine hit. However if you want to have caffeine energy this should do the trick. Maybe start with the single shot one day see if that's enough.