Windows 8 is a bit weird in the split between metro and desktop, and I feel these need to merge in the future. I hardly use metro apps because they don't work nicely with other apps, e.g. can't shift from one screen to another, resizing is difficult.
Surface RT I can't really see a market for. But Surface Pro is perfectly OK, competitive with laptops, some advantages (touch screen and stylus are nice), good screen with support for second screen, easy switch between laptop and tablet mode, some disadvantages but nothing too bad - keyboard just OK, battery just OK, only one USB port on the machine, etc. All in all next version will be nicer I'm sure, but I have one and I'm pretty happy with it and am not too worried about getting the next iteration - it works fine for me as is.
Surface RT I can't really see a market for. But Surface Pro is perfectly OK, competitive with laptops, some advantages (touch screen and stylus are nice), good screen with support for second screen, easy switch between laptop and tablet mode, some disadvantages but nothing too bad - keyboard just OK, battery just OK, only one USB port on the machine, etc. All in all next version will be nicer I'm sure, but I have one and I'm pretty happy with it and am not too worried about getting the next iteration - it works fine for me as is.