The custom firmware for the BitMain AntMiner S5 with the graphs both versions; the one with Cgminer 4.8.0 and 4.9.0 have a extremely high number of discarded shares and low accepted ones on other pools even using the #xnsub. The graph stats that the custom image offers is really nice for performance comparisons. The latest official firmware for the S5 really could use the graphs feature without messing up the other aspects of the image; because the officail image has way lower discarded shares and higher accepted ones.