Apart from the obvious size/weight and format issues (surface smaller/lighter and more tab-like, xe700 more laptop), I've read that it's possible/easy to upgrade the ssd and wireless card in the xe700 if needed.

I've been using the xe700 for a few months and it performs well as a laptop - light, good keyboard/trackpad, nice screen, front speakers, and on the lap it's never hot as the battery and processor are in the screen section, not on your lap. I'm not a gamer.

As a tablet, it's just a little too bulky/heavy, but it's good to be able to use onenote with a pen (I'm not an artist so can't comment) and as a tablet once in a while.
I've not lived with a surface so won't comment (as too many people comment without living with a gadget).

I'm not sure if similar quality laptops (screen quality and processor) are available at the price, let alone the convertible/pen features.

Foc.
Just get the Windows update.

Windows store, I think

8.1 single language, after I updated from 8.

I got mine from lowyat. But now it's available at digital mall PJ also.

what spec for that price?

its still prev gen i5 right? not latest haswell?

oh..thats the 3rd generation 4 quad processor. Haswell, i think is 4th generation onwards..which promises better battery life

I got mine from lowyat. But now it's available at digital mall PJ also.

No brand la. Bought it for RM30 at lowyat plaza.  2nd floor the hand phone level, right at the back there's an accessory shop. U can try there. Digital mall it used to be available in the ground floor centre accessory shop. I don't know whether they still have it now.