Jay Maisel. He's an old school old man, well known in NYC, and currently does street with a 70-300 milli on a D3 at 1600 ISO...in the day time.
And unlike maximum-image-quality hounds like Thom Hogan and Moose Peterson (because you know who they are : ), Jay recently said something that I found totally refreshing.
"I'm more interested in picture quality than the pixel quality."
Breath of fresh air.
P.S. - Work that iPhone Jessie!!