I was riding my Giant to work, when the chain was caught between the largest and middle chainring. I managed to free it, but I ended up bending the sprocket in the process. Now it rubs against the derailer cage, and if I try to shift out of top gear it falls between the sprockets and gets caught.

The crankset is a SR XR10 aluminum, 28/38/48 teeth. I was looking to get it replaced, but at the same time wanted something with more teeth for more speed.

Not sure what I should be looking for. Anyone have any ideas?