We've been using the Vibe since last August and something interesting we've noticed is that even with the G4 integrated, the two devices never have the same number or trend values. Usually, the Dex receiver itself is more accurate and close to the fingerstick, but sometimes the Vibe device is closer. Last night, the Dex said he was 80 steady. But, the Vibe started beeping at us for a low alert about 10 minutes before that. Fingerstick revealed a 59! If it hadn't been for the Vibe, we wouldn't have caught the low. I asked a rep about this recently, and he couldn't give me an explanation except maybe get a new pump sent out. But, this is our second pump and I don't think that will solve it. We calibrate each device at the same time each day and they both read off the same transmitter. So, why the huge difference in values? Anybody else notice this? We don't trust the Vibe CGM component as a result and therefore, this renders it useless except last night when it actually beat Dex at alerting us to a low.