I have been using a lot of the wyeast equivalent and get a consistently high 75% average. Has messed up a few beer because the mild I was making has no body at all. Mild 1.039 - 1.010(71%), English blond, 1.049 to 1.011(77%). Fullers 1845, 1.063 to 1.016(73%), ESB 1.051 to 1.010(79%), brown...