I have a Surface RT that I bought for fun. I barely used it and was too lazy to sell. Touch cover is shit, only the type cover is usable. The touchpad is very shit and you're better off just touching the screen directly for most things. You're limited to only Internet Explorer. Office works great, relatively portable, sturdy, but sluggish. You have pretty much no apps whatsoever. For tablet usage, I prefer using my iPad Air or Nexus 7 (2013). Just works better in almost any situation besides office tasks. Web browsing is even better than the standard Surface because IE is absolutely shit.
BUT, I'd be willing to buy a Surface Pro and not the standard version if I was in the market again for another device. Pro is pretty much a standard Windows set up and not gimped in any way. You can install whatever you want.