I did my own pybenching, and then wanked with a spreadsheet. Python-listopt seems a hair faster (~2%) I think the t-test says there's 90% confidence that the difference is statistically significant. I haven't had a chance to run the pie benchmark. redhat9, x86 2.4GHz, Python CVS. Python-cvs Python-listopt 29239.8 30303 29940.1 30864.2 29585.9 30487.8 29585.8 29411.8 29940.1 30487.8 29411.8 30303 29761.9 30303 27027 30303 30303 30487.8 29069.8 27777.8 Minimum 27027 27777.8 Maximum 30303 30864.2 Median 29585.85 30303 Average 29386.52 30072.92 Std.Dev 904.49 885.61 T-test 10.4% =ttest(b2:b11; c2:c11; 2; 3)