I have been using the Oakbrook Apple store since 2007. They have the best genius bar and trainers of any Apple Store I have visited. They are knowledgeable, patient and helpful. They truly care about their customers. They have taught me so much about my computer, phone and iPad. Any problems have been solved beyond my satisfaction. They have been very generous in honoring warranties on all products. Although I now live in another state I prefer to return to the Oakbrook store for purchases, updates and information.