It is depending on what aspect do you value most. In general, whether is it necessary for it to support full fledge Windows program or not. After deciding that, ATIV Smart PC or Vivotab (RT only) for highest portability, Dell XPS 12 for best overall experience, Acer Iconia for price, Sony VAIO Duo 11 for lightest tablet with keyboard + VGA & LAN port available.

Yes, indeed that's why I go for full Windows. It's very practical to use.

ATIV Smart PC below 2k should be Windows RT. Built quality should be decent, even though it doesn't look as it is. Can't justify the price tag. Lol.

Vivotab, not really sure. Didn't look into it more since it's Windows RT.

Dell XPS 12 is really nice to use, best ultrabook as reviewed, except the weight. Btw, it's same price as Sony one.

Acer Iconia is the cheapest one though.

Now I am actually confused. From what I knew earlier, Smart PC is running Windows RT, but just checked around and found out that it seems to be full Windows 8. Guess maybe I got the wrong information. >< U may verify with others again.

Okay, I think I didn't consider that bcuz it doesn't has dockable keyboard.

Do you need a digitiser pen ? 

If you do, there isn't much choices around.

Dell, lenovo & asus have windows 8 tablet that comes with digitiser.  I own Dell latitude 10 which does, and I also know that lenovo has almost similar model as dell.  Asus by far has the highest spec, 11 inches screen size that comes with one too. Do look it up from the web. 

I personally feel that digitiser is useful for small screen tablet like windows. Some window features do not designed with fat finger touches in general, unlike IOS etc.

My dell latitude 10 has to order through authorised dealer (in PJ), they no longer sell it through the web.  This model has docking station and pen which comes extra.  I got all that, along with a soft case cover which works very well.  No screen protector yet though. 

Digitiser works great for kids who like to draw and writing recognition.  Now windows 8 already has writing recognition for even chinese character too.  So its good for overall usage at home.  But for serious drawing and professional rendering, you will need bigger screen and i5 or i7 chip. 

For me, best combo is latitude 10 or lenovo equivalent and pen.

Its a good choice. 

My initial choice on dell is based on initial plan to use it in the office, with digitiser for data entry by writing actually. 

And the docking station of dell can automatically relay the screen to bigger LCD screen if I placed the tablet onto the docking station.  Its good for office use.  Docking station housed a network socket plus 3 USB, which can connect to additional full size keyboard and mouse.  Mainly all those are suitable for office environment.

can anyone suggest me the cheapest win8 tablet...that run win8 and not the lame RT version