I've had quite a few amazing strains... I have had some of the infamous G-14 bud that was legit, and man that did indeed get me blitzed. Alaskan Thunderfucks are also quite the high. Used to get some Gravity/AK-47 hybrids on a regular basis that were great. But I think the best buds I recall was some homegrown AK-47s bred with some Afghan Kush and some Bluberrys that a buddy of mine went all mad scientist on to breed a few years back... we dubbed it "Blue Jihad" it was tasty as hell and did the trick like none other.