my brother used one for a couple of years. no trouble with the pump operation per se, but sometimes the needle would come loose at nights during sleep. that was a real issue. because of this, combined with his gastroparesis he decided to go back to multiple daily injections. i believe his example is an outlier, though, so unless you have similar symptoms as he, i would encourage you to try the pump.
"Hey! I'm really good at everything, and that INCLUDES being an ass." - mellowinman