Interesting discussion. I find that symmetrical condors are the least profitable. I trade call/put IV adjusted condors with the 1/2 width of long wings vs short wings. My usual credit (depending on IV on S&P) is around 8 points on ES. I do the adjustments of the guts and leave the wings untouched. I have been running this strategy for 10 + years with constant success. In 2008 we made good money as well. It's just the matter of understanding of this construct and having a good plan to maintain it.