I had a surface RT, then a surface pro2, then a dell venue 8 pro, then a lumia 2520. out of all of them, I really enjoy the 2520. the camera is great, the screen is great, both in size and clarity. having the ability to use LTE is great, especially since I can also make it a mobile hotspot. the processor is leaps and bounds better then the surface rt processor. The nokia exclusive apps work really well(movie maker, storyteller, nokia camera). and it comes with office. and it can do miracast way better then the dv8p could.
I would highly suggest looking for a 2520 over a surface RT. the small increase in cost will be worth it. oh, and I still have the sp2, but I usually reach for the 2520