I'd agree with Ken. I bought an F45 for work at a cracking price and love it (it has the same sort of "bring the results home no matter what" character that distinguishes the F30/F31. Similar performance (though not scientifically) to my F30. I've seen reviews that suggest (as you'd expect) that the F30 low light performance
is better. But I'd be happy with an F40/45. The F47 is likely to be a small backwards step
