The one we have is original to the house, which means it's kinda crappy. Noisy and takes forever to do that job. Even when I think it has done the job, it hasn't. We've got this scamp of cat, Norman, who likes to dig in the disposal and if he finds something, it ends up on the floor I will run the disposal a couple of minutes with just strawberry leaves and trimming, not a big load, and later find a leaf on the floor. So I'm looking for a recommendation for a quality disposal. One that does the job quickly, thoroughly, and quietly. BTW, is replacing a disposal an easy job, something a klutz like me can do? Are the fixtures and what not, standard or are there different sink opening?