The reason was because I noticed the same fat-loss results when I only took EC (taken for 6 months straight), as compared to when I took the ECA (taken for 10 months straight).
The energy effects I felt were the same, and I never felt 'spaced out' with it. The energy I felt was always the same as what I've always felt with caffeine alone.
The energy feeling subsided after about the first 1.5 to 2 weeks each time I took it, both when I took EC alone, and when I took ECA.
I also remember reading about the ineffectiveness of the aspirin from a trusted author (Will Brink) a while ago, and he gave a convincing argument about it not being necessary.
That was what first lead me to try the EC alone as it was much cheaper than the ECA supplements and more convenient to buy 2 separate pills (the ephedrine and the caffeine) instead of trying to get the right doses of all 3 separately.
It was a while ago and I can't find the article now as it was in a forum that I needed to be a member of and my membership has since run out.
As I said in my first post though, I did not give the new version of HOT-ROX a try yet so I can't really compare, and as Cy pointed out, I probably didn't even give the older version a long enough chance with just one bottle.
I did notice that my appetite decreased a lot while using it, and I had to force myself to eat some of my meals, but I did manage to get them all down.
Another point I wanted to make was that while my strength continued to increase while using it, I don't know how much muscle mass I was losing with it. The strength gains were at probably the same rate it would have without it, so I'm not saying it helped, just that it didn't hinder it.
My maxes in the 3 PL lifts, over the 10 months I was on it went from
B:285-335 S:305-425 DL:315-425.
My body weight went from 165-148 so I'm assuming I was saccrificing muscle durring those 10 months, possibly due to the ECA stack and also the 45 min./3 times a week of fast paced eliptical cardio.