Been shopping with Amazon for 10 years and never had any issues. DHL on the other hand...just avoid them when ordering.
I've been purchasing from Amazon almost as long, and haven't had any problems. I have returned things a couple of times, and the process was simple and seamless both times. Also, their prices are quite often the lowest on the web or locally as well (I shop diligently for price, once I know what item I want), and if Amazon is shipping it, as opposed to a third party, I usually get free shipping.
Same. Use FEDEX for the business because of delivery of documents whose replacement is an enormously expensive hassle. No problems.
I never hesitate to buy anything from Amazon and have never been disappointed.