I have had a few bent cannulas with silhouettes only, but never with Quicksets. Others have the opposite. Seems to vary by individual. Using a different length may help, or may be too short. So the best advice is to call Minimed, and ask them to send samples of the various sets, and try for yourself.
Some have better luck with silhouette because you can vary the angle of insertion. But I prefer quicksets because I can reach more areas and insert/remove one-handed, which I found harder to do w/silhouettes.
Sure-Ts are metal, so there can't be a bent cannula, but I have never tried them.
Another thing that helps is to squeeze/pinch up the area of skin if possible, before insert. Although this is easier to do when you don't use the spring-loaded inserter device.