1MR is the best so far for myself. As said earlier, the serving size and it doesn't seem to lose effect over time is a plus. But want to get out of pwo cause I suffer from sleep problems and prob should just resort to coffee.
Rage by universal, took it right after school and couldnt fall asleep till 12. says do not take 6-8 hours before bed. Definitly had me pumped up all through the night