Ive smoked weed every day for about 6 years now and i can say i can smoke quite a bit, but the thing you need to realize is its not the amount its the methods. I could easily smoke a fat O of good shit in one night if hitting blunts, but not bong. another thing is different strains mean very little 1 because the chemicals are all mostly the same and 2 the growing conditions and environment affect the THC content.