It depends on your goals if you want energy go for Jack3d if you want pumps go for NO Xplode, also everyone is different and you might have better energy and pumps from jack3d rather than NO Xplode or either way, generally everyone at my gym prefers jack3d its cheaper and personally I feel steady energy release that lasts with focus and no crash while some people experience serious crashes, take one then take a break for one month then try another one see which one you like, by the time im posting this jack3d micro is already out and it doesn't have d1,3, but here in UK we can still get jack3d from internet or my local sup shop sells it cheap