If you have made this switch, can you weigh in? We are approaching our 4 year mark with the Ping. My 10 yo and I are both pumpers and will stick together, one way or the other I'm not crazy about making a switch, only because we have been very happy using the Ping. My Endo was pushing the switch, DD's didn't care either way but felt the Ping was a little more sturdy for a child. All T1 adults I know who now use the T-slim seem very happy. I don't personally know any kids using the T-slim. DD of course thinks the T-slim seems cooler. I am worried about the longer time it takes to refill. But I also take a lot of insulin, there is the option for the T-slim that holds more insulin, correct? I appreciate any thoughts.