Hi Jessica, I'm a new pumper and I've been having trouble with Quick sets also. Almost every quickset I have used ends up with a bent cannula. Mine are bending at the tip so I figure I must be hitting muscle.
I Called Medtronic and they sent me a sample of the different type of sets. I had the best luck with the Silhouttes and the Sure-T. I have decided to go with the Silhouttes because I like the angled insertion. It just seem less likley to hit something.
I tried the shorter quick set and it was OK but I don't like the quick-serter and even though the sil-serter looks like a harpoon gun I like it better. I also think I would like to try inserting the Silhoutte manually as shown on the support page.
I tried inserting a quick-set manually and had no better luck. Darn thing still bent at the tip.