Originally Posted by the chemist
I would be interested as well in those have done A/B testing or similar with RS2i vs RS2 as well. There is quite a price gap for the RS2, RS1 RS2i and RS1i.
I would really just go for the RS1s. They are the better headphone. More refined and the best example of that "Grado House Sound".
I tried the RS2s for a couple of hours and just came back to the RS1s did everything better (some a bit better and some more).
I currently own and have owned a various amount of headphones over the years. I've have sold many, but I still have my RS1s. They are my favourites...period (although my Denon AH-D7000s have been making me re-think this recently).
Not to mention I can guarantee, if you got the RS2s, in a few months you'll be wondering about the RS1s...then you're likely to move up and sell the RS2s at a loss (hopefully small). So just save your money and buy the RS1s from the start.