My daughter has had the T-slim for over 2 years but only changed over to Control-IQ in December (before that was on basal-IQ which stops basal when you’re dropping but does not do anything about highs). We found Basal IQ pretty amazing as we’d never had a sensor augmented pump of any sort before. But having been on Control IQ for a bit now I’d say that’s even better, just had first 3-month check since going on it and HbA1c has dropped from 54 to 43, and time in range (4.0-10.0) has gone from a not very good 39% to a way better 78%. I think we can safely say the pump knows what it’s doing better than we do! We find the sensors pretty accurate, the only thing my daughter really complains about is all the alerts, you get the pump telling you to eat something because you’re dropping when you’re only in the low 5s sometimes. But I think it’s better than anything she’s had before.