I can safely say that in terms of hardware, the MS Surface will be a very worthwhile investment because the Magnesium casing is super durable so it'll probably last longer than the average tablet.
Software-wise, yes Win RT has some bugs, Apps are few now but don't forget that Windows 8 also support WinRT apps so most developers will be stupid not to target a market that's 3-4 times bigger than OSX+iOS on iPad.
Ramp up of apps will grow much faster than WP7 which is already very impressive given the small userbase. I doubt it'll hit 100k apps by the end of 2012 but I could be wrong.
Lastly, many of the apps that they reviewed may still be compiled from the older beta versions of Visual Studio so performance may not be 100% + MS is just updating their 1st-party app from last week.
What will be interesting is how the Atom-based Clovertrail Win8 tablets from OEMS will perform compared to WinRT because the battery life should be similar, around 8 hours. I haven't seen any real review on those yet. I would also like to see how the Acer W700 with Core i3 performs because that is the closest to the Surface Pro in terms of specs.
