Nook vs Kindle vs iPad

Cost

Of course, the  first question on anyone’s mind would be: “How much does it cost?”

The iPad ranges from $329-$829.
The Kindle line is just $69-249.
The Nook brand totals to $99-$299.

Design 

                        Nook/Nook Tablet                   Kindle Fire        iPad(3rd Generation) Screen (in.)   
/Resolution:      6/800x600                                     7/                              9.7/
                           E Ink/                                           1024x600                  1024x768
                           7/1024x600                                  LCD                           LCD

Color:                16 shades gray/16 mill. colors  Yes                            Yes
   

Size (in.):            6.5 x 5.0 x 0.47/
                            8.1 x 5 x 0.48                               7.5 x 4.7 x 0.45         9.56 x 7.31 x 0.34

Weight(lb):          0.47/ 0.88                                    0.89                           1.3-1.35

ebook Format:    ePub & PDF/ePub,                     Kindle,                       ePub,
                             PDF, Doc                                     PDF, MOBI                Kindle, PDF

Performance

                         Nook/Nook Tablet                    Kindle Fire       iPad(3rd Generation)

Storage:           2GB/ 8GB or 16GB                       8GB                 16GB - 64GB

Web browser:        Limited/Yes                             Yes                         Yes

Connectivity:             Wi-Fi                                    Wi-Fi                     Wi-Fi/ 3G

Connectivity Cost:      free                                    free            Optional, $15-$50/ month

Audio/Video:             audio +

                                 images / yes                          Yes                          Yes

Games:                        Yes                                     Yes                          Yes

Sources:

http://ipod.about.com/od/ipadcomparisons/a/comparing-ipad-kindle-nook.htm

http://www.amazon.com/gp/feature.html/ref=amb_link_366177422_1?ie=UTF8& docId=1000846051&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-6-2&pf_rd_r=081WVZDGVXGT8FSD989R&pf_rd_t=201&pf_rd_p=1412997322&pf_rd_i=B0083PWAPW