Hearing mixed reports. Incresed resolution with notable increase in CA, and moire (expected) and a decrease in DR/increase in noise (unexpected).
I have a buddy that had a RX1 and sold it to buy a RX1R. He just sold that and repurchased a "regular".
Seems the RX1R might be the best for resolution junkies but the RX1 might produce somewhat sweeter images.
We will see.