At $200 an RT is a steal (imo). It comes with most of Office (Excel, Word, Lookout, Power Point) also which is a bonus if you use productivity apps.
My studio room is fairly dead which isn't a real problem if I'm DI-ing or using soft synths but right outside my door is a fantastically live space where I record acoustic instruments and vocals. So I use the Surface mostly as a remote control when I want to record in that space. I find it is still just a bit small for mixing. I've been holding off on a touch enabled 27" screen until I upgrade the OS which is unlikely this year. Going to have to do a clean install and not looking forward to that.
I think you'll enjoy the Surface.
Regards,