I've got the super nova. They are pretty bullet proof, if you can get past the looks of them. The only thing I've ever had happen is after a ton of pheasant hunting without cleaning, some of the weed seeds get into the trigger assembly and cause it not to cycle shells correctly. A quick bath in hot soapy water and blowout with a compressed air nozzle and pick always solved the problem.
Like I said, if you can get past the looks, it's a great gun. My gun shop always said, "she may not be the prettiest girl on the dance floor, but the dance floor aint where it counts."