http://www.partselect.com is a great online website hat allows you to choose your brand and model of dishwasher and then find parts to fix it. These parts do include dishwasher racks.
There are no dishwashers with lifetime warranties. The parts to the dishwashers might have lifetime warranties, but not the complete dishwasher.
Probably the best place to but Maytag dishwasher parts is at a Sears store. There are also many stores online that offer parts for Maytag dishwashers.
Kenmore dishwashers can be bought from the Kenmore suppliers or Sears stock them, you can possibly find them in most electrical stores which sell dishwashers
Sears has a good selection of portable dishwashers by the top brands Kenmore, Maytag and Frigidaire. Frigidaire portable dishwashers are the highest rated, receiving 5 out of 5 stars.
You can find a few commercial line of dishwashers and other kitchen supplies at website: http://www.ckitchen.com/commercial/warewash/dishwashers/undercounter-dishwashers/champion-undercounter-dishwashers.html They have Champion UH-100 Dishwasher on sale for $3569.00
There are several companies that have servicemen dedicated to repairing dishwashers including Hotpoint dishwashers. Some of the companies include Sears Home Services, Family Handy Man, and Lowes Repair Services.
Dishwashers are sold in stores that sell large appliances. A dishwasher is used by many to save time and guarantee that their dishes will be clean. To get more information on dishwashers you may want to contact your local retailer.
The best place a person can find a deal on commercial dishwashers is by choosing a large volume dealer. There is a multitude of reputable dealers the have lower prices on the product do to the large volume in which they order.
The most well know company that makes commercial dishwashers is Hobart. You can also find models made by EcoLab, JetTech, Champion, Moyer, Dieble, Insinger and CMA.
Comet dishwashers are no longer sold. As of November 2012, the comet company have stopped selling products. It would be advised to research other dishwashers as the Comet dishwashers are discontinued.
TopTen Reviews offers an updated ranking of new dishwashers available for sale. Their list is ranked by many categories that you can choose from. The list can be found on their website.
Sears Kenmore dishwashers beginning with 587 are actually manufactured by Frigidaire. You can find a bunch of manuals at: http://www.frigidaire.com/support/ResultsPage.asp?strModel=587 Unfortunately, there is no exact match for your model number there, but in my case I was able to find a manual for a nearly identical washer with a similar model #. You may also be interested in this product recall for some dishwashers with your model #: http://www.cpsc.gov/cpscpub/prerel/prhtml93/93042.html