Asus Eee Pad Transformer / Slider / Memo. The rather clever Asus Eee Pad Transformer gives you the choice of both, plus extra-long battery life. On its own, the 10.1 WXGA tablet (which has a resolution of 1280 by 800 for the extremely glossy and fingerprint-attracting screen) will get eight hours of battery, thanks to the dual-core Nvidia Tegra 2 processor.As well as the usual Wi-Fi n and Bluetooth it has GPS and multiple sensors (including ambient light). Connect it to the QWERTY keyboard base and you get an extra eight hours of battery.
The keyboard base also has more ports; the Asus Eee Pad Transformer / Slider / Memo gives you a microSD slot (which supports SDHC), mini HDMI and the docking port, but the two USB ports are on the keyboard (hidden away behind covers), along with a full size SD/MMC memory card slot.
Asus doesn't have the final weight for the keyboard; it feels similar to the 680 gram screen (a little heavier with 3G) but even together they're lighter than many netbooks (which these days are packing a hard drive and fan to weigh them down, as well as a hefty battery). Even with the keyboard attached, the Asus Eee Pad Transformer / Slider / Memo is still thin (it's 13mm on its own) and the keyboard also protects the screen handily when it's in your bag.