It's the Surface RT, and the Lumia runs Windows RT, so they are both Windows RT, I would still be pretty limited.
My problem is that if I have a laptop, I want to use it more, and then my computer at home gets like no use. It is a decently specked machine too. (i7, 8GB RAM, GTX 570, SSD and HDDs)
I don't want to waste the resources of my desktop and limit myself to a laptop. I was thinking of going with a tablet so I would be forced to use my desktop for and then hopefully I will not fill that I have wasted my money on the i7.
Ironically as I sit here at my dad's house on my old Chromebook, I now remember back to when I thought this thing would be all I need, boy was I wrong. You see, for the most part, as long as the only thing I want to do is browse the web, then yes, this thing is awesome. Killer battery life, and it charges fast too, but when I really needed it to do something, I found that I could not print from it by plugging it into a printer. I also would have a hard time using this thing for a presnetion or something. I think that I am going to go ahead and get a decent laptop. I will use that for the most part, and I will just host a Minecraft server and or Fold@Home with my desktop.
tl;dr
I just convinced myself to get a laptop.