We are being literally bombarded with new sleek bodies from multiple manufacturers every month.
These new bodies, include many small sensor cameras - with improved IQ. The MFT cameras like Olympus ep3, the fuji X100, and sony nex series are examples of this.
All this gets me to think - that the actual size of the sensor - as a factor in IQ - is quickly getting less and less relevant.
Compare images from a canon 7d - with a 5d FF from a few years ago. The 7d is easily the winner.
Now we have sites showing the fuji x100 - outdoing the 7d!
Obviously sensor technology is rapidly improving - and phtography has moved from optics to electronics.
We have to ask - is an ivestment in an expensive FF body worth it today? Sensor techology seems to leap every few months now - and your new FF may become stale fairly quickly ?