You can't go wrong with the Surface RT, if you are well aware of its limitations. It won't run legacy apps. Basically, if you can't find it in windows app store, RT won't do it. But you will be amazed at what it can do. And build quality is top notch.
If you have a laptop that works than the RT is a perfect companion. It has replaced my laptop for all my personal computer needs, but not the work laptop. The battery life is great on RT and may be questionable on the Pro model, if that is a decision maker for you. I get 8-10hrs streaming on netflix with RT and I think I read 5hrs for Pro. I'm also skeptical of Pro model capabilities with limited ram. I thought it was only 2gig???? Maybe 4gig???? That's not much with all the processes now days. If you want a laptop, buy something with expandable memory at least. And after my 920 experience, I would stay away from anything Nokia until real people reviews are out. They are just getting their feet wet again in this market and they have some issues to work through, in my opinion. Battery life mainly.
I would recommend the RT to anyone and buy it again if I had to. I reach for it for everything except work related tasks. And Office is powerful enough to handle everyday needs. IE is fast, not flawless, but fast. For consuming information, I don't see where the iPad can beat it. Now, its not as easy to get setup as an iPad. Its more laptop than tablet and offers more than a tablet.
There are so many options out there. Figure out what your needs are first and do a little research.