I just recently purchased quake 10.0 heard some things about how it is less jittery than NO and Jack3d which i cant take becuz im overly sensitive to stims and dont like the feeling from it... but i took the plunge and tried this. LOVE it during workouts but i find that if i take it any time after 3 or 4pm i find myself waking up around 1-3am just wide awake... i come home from the gym tired and fall asleep by 11 or 12 but then randomly just wake up wide awake or have toss and turn crappy sleep the rest of the night and i take the BARE minimum doseage... any one else have any thing like that with the quake?