firtsly welcome to the musclechat board gareth
secondly thanks mark for wishing me good luck with the new site,
ive only ever used a eca stack thats already made up,maybe gareth has tried the other sort?
i used the one made by nutrasport,i found this very effective and it had the correct dosage of caffeine,aspirin and ephedra,i think it will be very hard to get hold of now as the ephedra ban is kicking in,if u see one on ebay or another good auction site,snap it up,another good one is hydroxadrine made by ansi although it dont contain aspirin,u could always add it to it.
if u do try one u mix yourself mark,keep us posted on how u get on,
steve