Thanks for that Swifty. From the looks of that site, I see the D7100 has a lag of 248ms when pre-focused in live view mode, but with the optical view finder the lag is 54ms. The Canon is 59ms for both live view and optical view finder modes. I guess thats probably due to the canon introducing their dual pixel sensor.

I like that site you've linked. It provides far more detailed analysis than snapsort.

So, I was leaning towards the canon due to the shutter lag difference, but now that argument has just brought the Nikon's back onto my radar as possible future DSLR's for me...

Going to have to study the data on that site more....