I am very impressed with my current Enlite sensor. The largest gap between CGM and meter today was 0.3 mmol/l, well within meter error. It tracked my blood sugar perfectly overnight, no dips caused by lying on the sensor even though it is positioned so that it is underneath me for most of the night. I actually think that these sensors are approaching the accuracy required for a closed-loop system. I’m not sure how these sensors compare to the Animas system; I’ve heard they are very good. I don’t see how sensors could get much more accurate than the one I’ve got in at the moment though.