i love coffee. but these days i don't bother with making it and my mum only buys instant (gross), it is also not as convenient to drink and not that appetizing in the warm weather.
which is why i often prefer energy drinks. i've had to seriously cut down lately because i've developed mild arrythmia from my long-term excessive caffeine intake. :/
here are my favourites:
beaver buzz: 188mg of caffeine per 8.3oz. or if i want the no calorie version, 120mg of caffine. i would get this kind the most often as it's sold in most places, it's the smallest and cheapest ($1.99)
jolt: the cans are pretty big (24oz), way too much to carry with me. and i've only found them in a few places but for 99 cents, with 220mg of caffeine. pretty sweet and i'll occasionally stock up when i'm at that store to keep at home.
redline: the most EPIC energy drink ever. 320mg of caffeine per 8oz bottle. it's not carbonated which i prefer and it doesn't taste too bad. i try to hold back from drinking it all at once, since it carries a very long list of warnings on the bottle: "not recommended for those with psychiatric conditions, on medication, with caffeine-sensitivity, under 18, mixed with alcohol", etc. that's how you know it's ****ing hardcore ****. it's also pretty rare to find (only found it at one 7-11 location)