Julia Fischer strikes me as the new Anne-Sophie Mutter, and my previous favourite version of these 3 gorgeous concerti was the Mutter one with Salvatore Accardo and the ECO, recorded when Frl. Mutter was about three-and-a-half. So, I played them one against the other - and I'm torn. Both ladies play with precision and flair and joy, and are absolutely ear-ravishing, and in the end, to me there is overall nothing to choose between them. Neither uses a baroque violin, but this is music for the ages, not to be straitjacketed with period performance considerations.
However, the thing that for me makes the big difference is the recording quality. This version has a nice, crisp recording, whereas the ECO in the Mutter version (now pretty ancient admittedly) sounds congested, as if all the fiddlers were forced to stand and play in the corner for being naughty boys and girls.