Lenovo ThinkPad Twist vs HP Envy x2:Who is your favorite?

W.A.Khan,                                                                                                                                             Lenovo ThinkPad Twist                                                                                                                           The ThinkPad Twist has great Lenovo construction, a responsive touch screen, and a center hinge for flipping into tablet mode, all for a very reasonable price.
But, The screen accelerometer can have a mind of its own, flipping into portrait view randomly. Battery life is merely OK, and the screen resolution is low for a modern laptop/tablet convertible.
The bottom line: Slightly less conservative-feeling than the average ThinkPad, the well-made ThinkPad Twist offers one of the better tablet modes from the first wave of Windows 8 convertibles.
System configurations                                                                                                                                Windows 8 (64-bit); 1.7GHz Intel Core i5-3317U; 4GB DDR3 SDRAM 1,600MHz; 32MB (Dedicated) Intel HD 4000; 500GB Hitachi 7,200rpm                                                                                                   Specifications
ProcessorIntel 3rd Gen Core i5i5-3317U / 1.7 GHz ( 2.6 GHz ) ( Dual-Core )
Memory4 GB
Hard Drive500 GB - Serial ATA-300 - 7200 rpm
Operating SystemMicrosoft Windows 8English / MUI
Display Type12.5 in IPS
Max Resolution1366 x 768 ( HD )
Graphics ProcessorIntel HD Graphics 4000
Optical DriveNone                                                                                                                                       Price;$749.99                                                                                                                                              VS                                                                                                                                                          HP Envy x2                                                                                                                                                The HP Envy x2 has a clean, comfortable design and feels lightweight in tablet form. It has excellent battery life, and works just as well as a laptop as it does as a tablet.
But, The laptop mode is top-heavy, and the awkward tablet detachment mechanism isn’t perfect; it has limited ports; and a slower Atom processor means in performance it's far behind most ultrabooks, even though it’s priced like one.
The bottom line: The HP Envy x2’s capacity to be a full Windows 8 tablet or dock with a keyboard works as well as advertised, provided you’re willing to live with slower performance at a high price. You’re paying for style.
System configurations                                                                                                                                  Windows 8 (32-bit); 1.8GHz Intel Atom Z2760; 2GB DDR2 SDRAM 1,066MHz; 747MB (Total) Intel GMA; 64GB SSD             Processor 1.8GHz Intel Atom Z2760
Memory 2GB, 1,066MHz DDR2
Hard drive 64GB SSD
Graphics Intel GMA
Operating system Windows 8
Dimensions (WD) 11.9x8.1 inches
Height 0.6-0.7 inch
Screen size (diagonal) 11.6 inches
System weight / Weight with AC adapter 3.1 pounds / 3.6 pounds (tablet + keyboard)
Category Ultraportable hybrid                                                                                                                   Price; $849