Hi, Dante, Kindle Fire has a very reflective non-laminated screen that is not great for reading while Nook Tablet has fully laminated and better quality screen. In my opinion e-Ink Nook Simple Touch ($99 with no ads) and LCD Nook Tablet from Barnes & Noble are much better devices than comparable Kindle models.
Nook Simple Touch has twice the battery life of Kindle Touch ($139 without ads), faster page turns than Kindle, and microSD card slot to expand capacity that neither Kindle has. Also it's worth mentioning that if you walk in with any Nook to Barnes & Noble store, you'll get tech support and you’re allowed to read ANY available eBook for free while in the store via free provided in the store Wi-Fi where Nook eBook store has over 2.5 million of paid books and about the same number of free public domain books.
Nook Tablet is the best - it's been getting rave pro reviews on the web and it is the best device in it's class - much better than Kindle Fire. It's got Netflix, Hulu, Pandora, Angry Brids, etc., the best battery life (30% beter), the best non-glare laminated screen (visibly noticable difference in side by side tests in video playback and eBooks reading), double the RAM and space for apps/photos/movies, microSD slot (not on Kindle) and a microphone for Skype (not on Kindle), and much zippier performance during video playback and apps usage than choppy/laggy act of Kindle Fire according to many user reviews. Other issues are that it runs hot to touch, video playback is jerky, touch screen is not responsive and it takes 2-3 touches to register, power button placement is very poor and is prone to accidental power off, all the hype of Silk browser is a myth where the browsing is actually slower than on other Android tablets, etc.
See one pro review I found that would be of use for you:
PCWORLD:
The Nook Tablet's unique display has less reflectivity than the Kindle Fire's, and so is easier to read. In addition, some fonts and videos render more sharply on it than on the Fire. The dual-core 1GHz Texas Instruments OMAP 4 CPU and 1GB of RAM made switching from app to app a breeze, with little lag or stuttering. Movies played smoothly and stutter-free in Netflix, and the high-definition images re-rendered for Nook's 1024-by-600-pixel display looked lovely, with terrific contrast.
The Nook Tablet's display was dazzling overall. The screen's glare was minimal, thanks to what Barnes & Noble calls its VividView display. The IPS display is laminated and bonded; so unlike on other tablets's displays--including the Kindle Fire's--there's no annoying, visible air gap between the glass screen and the LCD beneath.The Nook Tablet's home screen is highly customizable and provides quick access to apps and reading material.