I got a set of these and also a set of the 5000 5S, and although they have just a few cycles on them they are really performing fantastically well.

A few minutes ago I finished charging them on the Cellpro 10XP and the IR numbers were fabulous for such inexpensive batteries, ranging from 1.2milliohms/cell to 1.7, with most being on the lower end. So far I have been flying the separate 5S batteries in the 62" Osiris and they have great punch beginning to end.