The Nook GlowLight and Amazon Kindle Paperwhite are two very similar e-readers. Both e-readers display e-books on a six-inch black-and-white screen, but there are some differences between the two devices.

The Nook Glowlight, from bookseller Barnes & Noble, just lowered its price to $99, according to the store's website. At that price, customers receive an ad-free experience along with personalized recommendations from Barnes & Noble experts. If a Nook user has an issue with their device, they can take it any to any Barnes & Noble location for service.

Also offered at the Barnes & Noble locations is free and automatic WiFi to Nook users and up to one hour per day of free books while customers are inside the store. Free and automatic WiFi is also offered at all AT&T Hotspots in the U.S.

The Amazon Kindle Paperwhite is offered at two prices: One with ads and one without. For $119, customers can purchase a Kindle Paperwhite that will be ad-supported. This means that different ads will be displayed while users read on their Paperwhite.

For $139, a Paperwhite without ads can be purchased. Since Amazon does not have any physical locations, customers will not be able to take their Paperwhite into stores to get it serviced if they have problems. They also will not be able to take advantage of free books while inside stores. The Paperwhite does not offer any personalized recommendations from experts like the Nook does. The Paperwhite also offers free and automatic WiFi at all AT&T Hotspots in the U.S.

The Nook Glowlight and the Kindle Paperwhite have the exact same 6-inch displays that display resolutions of 758 x 1024 using e-ink which is supposed to look just like paper.

The Nook Glowlight is the lighter device weighing just 6.2 oz. The Kindle Paperwhite weights in at 7.3 oz.

The Nook Glowlight also offers more storage space, with the capability to store up to 2,000 books, while the Kindle Paperwhite can only hold about 1,000 books.

Both devices offer excellent battery life, up to eight weeks on a single charge.

The Nook's processor is only 800 MHz, compared to the Paperwhite's 1 GHz, making Amazon's e-reader, according to CNet, just fractions of a second faster.

The ability to take the Nook into a Barnes & Noble store if support is needed is a big advantage. The lowest-priced Paperwhite comes with ads, and it does not offer an in-store support option.

For buyers looking to save money and get the better device, the Nook is the way to go.