Samsung's gearing up for a FF cam as well... Not being pessimistic, but a consumer-electronic company dipping into a whole new frame mount is a tough, tough battle to get into. No doubt they'll do really well in their home market, though.
The ergo is quite good for the NX, the OLED screen is nice too, though it's less than VGA. AF is pretty snappy in average, indoor lighting. Noise is comparable to earlier DSLRs, the NR is quite aggressive with jpegs, no clue how the RAW handles (not even sure if there is RAW or a RAW converter for it).