Microsoft Surface RT vs Dell XPS 12 vs Apple iPad 4;Who is Best one?

W.A.Khan,                                                                                                                                                                                                                                                                                                                     Microsoft Surface RT                                                                                                                                                             Microsoft Surface is a strong entrance to the world of PC hardware for Microsoft, and as a device it's certainly highly recommendable.The Microsoft Surface's Metro interface is innovative, elegant, powerful, and versatile. The tablet feels strong and well-built, runs Office 2013, and includes rich video and music services. Its keyboard cover accessories are the best ways to type on a tablet, period.
But, The tablet's performance can be sluggish, its Windows Store is a ghost town, Metro takes getting used to, and the Desktop interface feels clunky and useless.
The bottom line: If you're an early adopter willing to forget everything you know about navigating a computer, the Surface tablet could replace your laptop. Everyone else: wait for more apps.                                                                                                         Specifications
Display type10.6 inColor TFT active matrix - Yes
OSMicrosoft Windows RT
RAM2 GB
ProcessorNVIDIA Tegra 3
Wireless connectivityIEEE 802.11nIEEE 802.11bIEEE 802.11aIEEE 802.11g
Dimensions (WxDxH)9.3 mm10.8 in 6.8 in
Weight676 g                                                                                                                                                                           Price;$494.98 to $599.00                                                                                                                                                                 VS                                                                                                                                                                                                                                                                   Dell XPS 12                                                                                                                                                                                 The XPS 12 isn’t perfect, but it’s certainly one of the more successful attempts to create a hybrid mobile device that can function as both a laptop and a tablet. The Dell XPS 12 is a thin, powerful, very cleverly designed touch-screen convertible that flips into multiple screen positions.
But, For all the hype about touch and tablets with Windows 8, the XPS 12 still works better as a laptop than as a slate. Its battery life is on the low side.
The bottom line: Dell has revamped its rotating Duo laptop concept into the much-improved XPS 12, but like most convertibles, it makes a better laptop than tablet.
Windows 8 (64-bit); 1.9GHz Intel Core i7-3517U; 8GB DDR3 SDRAM 1,333MHz; 32MB (Shared) Intel HD 4000; 256GB Lite-On IT SSD                                                                                                                                                                                     Specifications
ProcessorIntel 3rd Gen Core i5 3317U / 2.6 GHz
Memory4 GB
Hard Drive128 GB
Operating SystemMicrosoft Windows 8
Display Type12.5 in
Max Resolution1920 x 1080
Graphics ProcessorIntel HD 4000
Weight3.35 lbs                                                                                                                                                                           Price;$1,199.99                                                                                                                                                                            VS                                                                                                                                                                                                                                                          Apple iPad 4                                                                                                                                                                         The new iPad with Retina Display is the best large tablet going with better battery life and performance than both the iPad 3 and the other large tablet competition.The newest iPad's faster A6X processor adds extra system speed and graphics power. Improved worldwide cellular compatibility makes the LTE model a more appealing proposition. And the iOS App Store remains best in class, with the widest selection.
But, The fourth-gen iPad is otherwise identical to its recent predecessor -- same size, weight, and Retina screen. It's heavy to hold in one hand, and most older accessories won't work without investing in a pricey Lightning adapter.
The bottom line: The latest iPad adds several tweaks and improvements to secure its position at the top of the tablet heap. It's better all around, but third-gen owners need not apply.                                                                                                                     Specifications
Display type9.7 inTFT active matrix - LED backlight - Yes
OSApple iOS
ProcessorApple A6X
Wireless connectivityIEEE 802.11nIEEE 802.11bIEEE 802.11aIEEE 802.11gBluetooth 4.0
Dimensions (WxDxH)7.31 in x 0.37 in x 9.5 in
Weight1.44 lbs                                                                                                                                                                          Price;$499.00 to $509.49