I have very little gripes with NEX-3 either. NEX-7 is much better (in fact, some details of its operation remind me a lot of my 1D Mark II N... namely the AF point selection method where a horizontal dial scrolls AF points horizontally and a vertical dial scrolls vertically. Very cool.
And, last but not least, the NEX-3 has better IQ than my Canon. Not sure about the 7.
And, last but not least, the NEX-3 has better IQ than my Canon. Not sure about the 7.