Stainless steel may be the rage; however, it comes with a downside - keeping surfaces clean and free of smudges and streaks. Some people get good results using microfiber cloths, sold at many stores that sell cleaning supplies, to clean the stainless steel. The cloths can be reused many times. Note that some stainless-steel appliances are "clear coated" with a coating that is supposed to help make them easier to clean. In general, stainless steel cleaners that can be used on uncoated steel should not be used on these coated surfaces.
If you have an owner's manual for your appliances, you should see what cleaning methods the manufacturer recommends. If you don't have a manual, contact the manufacturer for advice on handling your specific cleaning problem. If you cannot get any help from the manufacturer and simple washing and drying or using microfiber cloths or the manufacturer's recommended cleaning product, doesn't help, there are several other ways to clean stainless steel. Try a half-teaspoon of dishwashing detergent in a pint of warm water, applied with a sponge, then wiped dry; or, try rubbing alcohol, vinegar, or club soda, applied with a soft cloth. But always first try any cleaner in an inconspicuous place to make sure it doesn't cause additional stains.