Surface RT owners in the tribe , Need some advice.

Is the surface rt worth buying if the price maybe goes down to $250-$200 and also how bad is the lag. Ive been to several MS stores and from what i have seen , its actually quite smooth ,idk maybe MS is overclocking or some Voodoo stuff because people always say that surface rt has horrendous lag and to not buy it. Im only going to be using it for World Docs + Music + Web Browsing so im not really concerned about the ecosystem.