I liked them both. Jack3d is better on taste, 1MR is a lil sweet and tart. Im currently using Napalm by MuscleWarfare...blows jack3d and 1MR out of the water.
Jacked has 1,3 in it so I liked it more. Although Bodybuilding.com had already stopped selling Jacked since the FDA sent out their letter about 1,3. I'm sure Jacked will change the formula soon enough.
i got the cherry lime 1mr and almost tossed it. jacked tastes better but i stop feeling it after 3wks. best one out right now is craze from what i am hearing