The most common complaint with the cover that comes with the Kindle, is the way that it keeps the eBook reader in place. While it has two slots, which you can slip your eBook reader into, there is a tendency for it to slip out, and if you're not careful, it could hit the floor. As we know with all electronics, this is not an ideal circumstance. Many workarounds involving Velcro in strategic places have been suggested to keep the Kindle in one place when a person is reading.
There have also been a number of very good aftermarket companies offering stylish, high-quality solutions to the Kindle cover quagmire. Three higher quality brands are Strangedog, Stylzworld and Noreveusa
Amazon also has a new cover coming out at the end of the November called the M-edge cover, which is much anticipated. There are 12 different models that are genuine leather in various colors and compatible with an e-Luminator book light. If you own a Kindle, you'll immediately recognize how a book light that connects and doesn't wobble is a good investment for your Electronic Reading Device. There are also non-leather "Leisure Jackets" that sell for less, but on the whole the M-edge is a luxurious addition to the Kindle cover arena.
Strangedog
Strangedog offers handmade covers that are both beautiful and custom. He only makes a couple in each style and each is very well crafted and durable. He offers the Velcro option to hold the Kindle in place, and will even take fabric from the customer in order to make a cover to spec. There is a waiting period as he only makes a limited number of these per week. Strangedog take pride in his hand made covers, and the level of craftsmanship is excellent. In this plug-n-play world, Strangedog is a one of a kind vendor who prides his work over mass production.
Stylzworld
Stylzworld offers a cover that is made of unique cognac brown leather with a sparkling design on the inside. It is genuine leather, tri-fold cover that has cutouts for credit, business and memory cards as well as other types of documents. It has an innovative holding system as well as a cutout in the back for the on/off buttons. You will have to contact them if you live in the United States as they are currently looking for distributors and are mainly located in Europe.
Noreveusa
A traditional leather case/cover is offered from Noreveusa and comes in 3 colors. It has a clasp that closes and holds the Kindle steady. It has the same problems presented with the original Kindle, although the clasp and leather make it a nice Kindle cover to consider.
Amazon offers a few different cases that will protect your Kindle if a cover isn't what you're looking for. These other options include a Neoprene Sleeve Case with a screen protector, a travel package that includes a leather case and travel book light, and a black neoprene case that's good for travel. However according to the word in the Kindle forum, it appears that most people are waiting on the M-edge genuine leather executive case as the best buy in Kindle covers for Christmas.