Its all a matter of personal preferance. I have smoked winners that were losers and losers that were winners. You have sativa's, indica's, auto's, and hybrids of many varieties. Perhaps.. whats the most potent weed out there? and even that is a matter of how ones body interprets the buzz... Personally, I love GHS trainwreck, my favorite in every category but the most potent that I have grown is the white russian, and the prettiest was white widow...