I just caught your response. I have used Tmax in the past but my preference is Tri-X @ ASA 200 because it has a much lower threshold then Tmax 100 and when developed in HC110 diluted 1/46 or 1/62 from concentrate, gives a nice compensating effect so that the shadows and low values have plenty of seperation. I shoot mostly 4x5 so I also want the extra speed for smaller aperatures.

As for light sources in the picture, I avoid it as muh as possible. The contrast range is way to high so they are generally distracting, over domineering in the picture. Street lights as a light source are high enough and unidirectional to accentuate textures and sharpen lines so that it sculpts the subject much like hard studio lighting. I like the effect very much and produce dramatic results.