I weigh more than you do, and one way or another, I've had real LBZ, whatever false claims might be, I think. I just think it's getting very over-picked in recent years. In any event, I've never had a session with a good tea, banzhang as labeled or not, that didn't really just kind of ease in before you realize you're very hammered.
I still say that a no bleep Da Xue Shan unloads more qi on your system in a hurry than LBZ. I'd also say that there is just very little truly good LBZ (in terms of qi) making it to the market anymore. Or Lao Man'E, for that matter. The TeaUrchin Lao Man'E is just moderately strong in qi, for that matter. Menghai Mengsong, Naka, and Man Nuo gives about the same heft (or more) as any newer LBZ I've had.