[Microsoft Surface] kdoul:
Pros:

Metal casing makes it feel premium and durable.

The screen is bright and the colors are vivid even with auto brightness turned on.

Unlike most of the tablets it has a full usb 2.0 port so you don`t need an otg cable.

If you get a (touch) cover you will not need a tablet case.

Kickstand.

Charger does not rely on usb. That means faster charging and longer charger cable.

Cons:

Its heavy because of the metal casing.

The cameras are pure garbage for taking photos. However they are super fine for skype and 720p(and 800p) videos.

The touch cover sometimes misses keystrokes(maybe I need to push it harder?).

The SoC is old (from 2012) so some apps and future updates might not run super smooth.

If you are interested in running anything else other than windows Secure Boot will say nope.

The Surface runs on windows RT which means no desktop applications (not because you are not able to, because microsoft said nope, see windows RT jailbreak) except for ms office, basic windows utilities (minus media player) and IE.However you can get all the apps from the Windows Store (well not all just the arm compatible ones, see VLC). It has reached a hundred thousand apps, some of them are very useful.

Windows RT is certainly closer to a real operating system than iOS or Android. Windows Explorer is an excellent file manager and IE is a desktop browser, so you will always get the full featured website (and not the mobile optimized one).It also has full Flash support out of the box!

Unless you only run ms office and browse the web with your desktop/main computer surface rt will NOT replace your desktop. Even jailbroken will still run very few (though useful) desktop applications.

Windows RT IS Windows but microsoft decided they needed to have absolute control over what is running on it. If they had it open I am sure many applications would have been ported on arm (just as many did on 64bit, its just a matter of compilation). That lockdown is the reason windows on arm never really succeeded(and why the 600 dollar surface came down to 150 with the touch cover...). WinRT(Windows RunTime not the os) is very limited and runs on a sandbox so dont expect any functionality near the one of the classic windows applications (or some android ones) on Windows Store Apps.

Overall I would recommend Asus T100A or some of the Bay Trail tablets that will run everything your laptop or desktop does and have better performance compared to Tegra 3( its equal to Tegra 4 or Snapdragon 800). However you will get worse battery life compared to the arm processors(6-8 hrs atom vs 10-12hrs on arm) and sometimes worse build quality for the same price.

If you are happy with what you can do with ms office and IE on the windows desktop then go for it. Its an excellent tablet with a keyboard on a good price.

If you want to run some of the popular windows tools (Visual Studio, Notepad ++, Sublime Text, 7 Zip, Vlc, Chrome etc...) then you need a bay trail tab.

Personally I thought I could work with Surface RT but after a week of using it on 8.1 I downgraded on RT to get the jailbreak. I use it a lot more than my android tab( nexus 7), but still after a month of usage I feel it is awfully limited.