I bought a stainless steel replacement set of beaters for m5 quart Ktchenaid.  I love that I can toss them in the dishwasher and there is no coating to chip of flake off.  I wonder why Kitchenaid doesn't just include the stainless steel attachments with the mixer when you buy it.  It's a waste to get the burnished ones and have to replace them and when customers invest in an expensive mixer, they expect the parts to be high quality which the burnished attachments are not.  I think most of the reviews here are for the burnished attachments that come with the machine rather than the stainless steel ones.  I recommend replacing all the attachments with stainless steel and buying an extra stainless steel whisk so you can whip egg whites and egg yolks without having to worry.