I love my N2KTS, i use 2 scoops and get the similar red effects+ some weird sensation across my back and into my ass.
The only thing is, i used it 2 days in a row and the 2nd day nothingthe first time i ever took it was the best, i was like a squirrel on crack. I think the effects decrease as you go though, as thats what's happening to me :\
SAME here bro. I was using jack3d but its the same exact ingredients as N2KTS.
I like ephedrine/caffeine/green tea extract. I also take CLA/multi/800mg ibuprofen before workouts and im good.